Experienced and professional animal trainer provide their insights in answering this question :
A. This is most likely prepuce infection. You should take your dog to your vet who is likely to prescribe antibiotics and / or prepuce flush with antiseptic solution.

How to Identify Common Pet Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

It`s actually coming from the sheath, not the penis. Quantity can vary from undetectable to a drop, but it`s all normal.” The material, which looks much like pus to the naked eye, is actually made of cells and lubricant fluid in the prepuce that surrounds the penis inside its protective sheath.
Pyuria in Dogs

Pyuria can also be associated with any pathologic process (infectious or noninfectious) that causes cellular injury or death; tissue damage can provoke oozing inflammation, characterized by evidence of pyuria and increased red blood cells and protein in the urine.

The strong fishy smell is coming from anal glands that are full but leaking some fluid. You may smell it on your soft furnishings or actually coming from your dogs bottom. If you notice these things it could be that your dog has an anal sac issue and/or your dog`s anal glands are not emptying correctly on their own.
Pyoderma literally means “pus in the skin.” It can be caused by infection, inflammation, or cancer and is common in dogs. Most cases of pyoderma are caused by bacterial infections. Most of these are superficial and secondary to a variety of other conditions, such as allergies or parasites.
Discharge that is yellow or sticky and pink and comes from a pocket within the skin most commonly indicates an abscess. Abscesses are a collection of pus that can occur anywhere on your dog`s body. They often occur because of a scratch, bite, or wound caused by another animal or some unknown oopsie.
If the abscess hasn`t broken open on its own, your veterinarian will perform a minor surgical procedure to drain the pus. Antibiotics will also be needed whether the abscess burst or the veterinarian drained it. The medications kill bacteria and prevent the infection from spreading throughout your pet`s body.
A mild dog shampoo and a bit of gentle scrubbing will do the trick. Be sure to always use a fresh water rinse when cleaning your puppy`s privates. Dried soap or shampoo can cause irritation.
If your dog smells of fish, the most common cause is usually problems with their anal sacs, but it could also be a sign of dental issues, digestive conditions or infections. Dogs have small sacs that sit either side of their anus and produce a distinctive smelling liquid that helps other dogs to recognise them.
Dogs also “express” their anal sacs when they are scared, which is perfectly normal, if a bit odorous. Anal gland secretions have a distinct smell that many people describe as fishy. If your dog smells like fish, chances are there may be something going on with their anal glands.
Pus is a sign of infection. Pus after surgery indicates that there is a post-surgical complication in the form of an infection. People who detect a discharge of pus following surgery should tell their doctor immediately. In a patient with weakened immunity, the system may not respond correctly.
In some cases, an abscess drainage may be needed to clear pus. In such cases, if pus is not cleared, the infection may be harder to resolve. At the same time, the infection may spread into the bloodstream, causing a potentially life-threatening reaction known as sepsis.
A wound that`s healing can produce a clear or pink fluid. An infected wound can produce a yellowish, bad-smelling fluid called pus.
Just make sure you avoid the urge to squeeze the abscess. While it might feel like you`re getting rid of the pus, you`re likely pushing some of it deeper into your skin. It also creates a new open wound. This could develop into another infection.
Purulent drainage is a sign of infection. It`s a white, yellow, or brown fluid and might be slightly thick in texture. It`s made up of white blood cells trying to fight the infection, plus the residue from any bacteria pushed out of the wound. There may be an unpleasant smell to the fluid, as well.
Pus is a sign that your body`s immune system is working to fight off an infection. It contains white blood cells (like neutrophils), microorganisms (like bacteria), and dead tissue (Birkhauser, 2019). When your immune system detects a bacterial infection, it sends white blood cells to the infected area.
Urinary tract infections

One of the most important things about this infection is that UTIs are not associated with only females. Males are also prone to this infection where the Urinary tract infection can cause a certain kind of white liquid in urine in males.

A skin abscess is a painful lump on the skin that contains pus. Some abscesses go away by themselves, but you may need to get treatment from a GP.
When sepsis does develop, signs include shaking, fever, weakness, confusion, lack of appetite, vomiting, and diarrhea. Other signs can also be present depending on the type and location of the initial infection.
You shouldn`t use baby wipes on your dog. “People tend to think that what is safe for humans is also safe for animals, but this is not true,” says Dr. Klein. “Ingredients in human wipes are not formulated for dogs, especially those with fragrances.”
Most dogs involuntarily express their anal glands. If a dog`s nutritional needs are being met with high-quality food, and they maintain a healthy weight and get plenty of exercise, they should not need to have their anal glands expressed. If your dog is not having an issue, there is nothing you need to do.
YES! Multiple types of sexually transmitted infections such as herpes can easily be spread through breeding populations if precautions are not taken.
Use a dog-safe shampoo and avoid getting water in his ears. After the bath, dry your dog off thoroughly and brush his fur. You may also want to use a deodorizing spray or wipe to help combat the fishy smell. If your dog has allergies, talk to your veterinarian about treatment options.
Summary. Preputial discharge is common in the male dog. In health, it is referred to as smegma, and represents an accumulation of sloughed cells and glycoproteins within the preputial sheath. Its amount and color vary between individual patients.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. We have a 4 yr old lab-pit mix we raise from 6 weeks.If my husband tries to take hin by the collar and make him go out to pottie he growls.Problem?
ANSWER : A. This is not good behavior. Rather than take him by the collar, call him to come with you. If he’s not good about coming when called, you can work on that. Keeps treats on hand to to entice him out and reward him when he does go potty and he’ll come to look forward to it. Clicker training is another great way to teach a dog all kinds of things, from obedience to tricks.

Have treats on hand that you know he loves, then simply click and treat. He will come to associate the sound with getting a treat. Start putting distance between you so he has to come to you. Call and click and when he comes to you for that treat, treat him and give him lots of praise. Move to hiding somewhere in the house, call and click. When he comes to you reliably inside when you call, click and treat. When this behavior is consistent, move outdoors with a very long leash. Call and click, if he doesn’t respond, give a light tug on the leash. If he takes even a single step toward you, click, treat and lots of praise. Keep doing this until he comes eagerly. Next, try him off-leash in a securely fenced area. Call and click. At this point he should be responding well and coming easily to the call and click. If he does not, go back to the last step he performed reliably and work on that again until he responds well. Eventually, you can start not treating him every time, but still praise him. Gradually lessen the frequency of the treats until he comes just to the click and praise.

Keep training sessions short, ten or fifteen minutes to start, no more than 30 minutes at a time and do it a few times a day. Try not to do it any time he is overly excited so that he can pay attention to you. Always end a training session on a good note, even if it is just getting him to do something he already does well on command. And never, NEVER punish a dog when they come to you, no matter how far they’ve made you chase them, no matter how frustrated and angry you might be. That teaches your dog that coming to you is a bad thing.

Read Full Q/A … : Causes of Limping in Dogs

Q. My puppy will be 8 weeks old tomorrow. I’ve had her for a week now, and she still isn’t responding to any training or her name. What can I do?
ANSWER : A. Try clicker training her to come when called. Clicker training is an effective way of training you dog to not only come when called, but can be used to teach a variety of tricks and tasks.

Have treats on hand that you know she loves, then simply click and treat. She will come to associate the sound with getting a treat. Start putting distance between you so she has to come to you. Call and click and when she comes to you for that treat, treat him and give her lots of praise. Move to hiding somewhere in the house, call and click. When she comes to you reliably inside when you call, click and treat. When this behavior is consistent, move outdoors with a very long leash. Call and click, if she doesn’t respond, give a light tug on the leash. If she takes even a single step toward you, click, treat and lots of praise. Keep doing this until she comes eagerly. Next, try her off-leash in a securely fenced area. Call and click. At this point she should be responding well and coming easily to the call and click. If she does not, go back to the last step she performed reliably and work on that again until she responds well. Eventually, you can start not treating her every time, but still praise her. Gradually lessen the frequency of the treats until she comes just to the click and praise.

Keep training sessions short, ten or fifteen minutes to start, no more than 30 minutes at a time and do it a few times a day. Try not to do it any time she is overly excited so that she can pay attention to you. Always end a training session on a good note, even if it is just getting him to do something she already does well on command. And never, NEVER punish a dog when they come to you, no matter how far they’ve made you chase them, no matter how frustrated and angry you might be. That teaches your dog that coming to you is a bad thing.

Q. Excessive pus discharge
ANSWER : A. We don’t have much information to go on here, as we don’t know where the pus is coming from. But pus is a sign of infection, so your dog should be seen by a vet, who may prescribe antibiotics among other treatments.

Q. My Golden, Tobi is 10 fluid around his lung an enlarged spleen and liver is large on one side waiting for the results of lung fluid. What do u think?
ANSWER : A. Unfortunately it is necessary to determine the nature of the fluid before being able to give you more specific informations/opinions/diagnosis. Generally speaking, there are three different type of pleural (pleural means that is coming from the space around the lungs) fluid:

Exudate, Transudate and modified transudate. Other types could be pus or blood.

Exudate typically comes from inflammation (of different types); transudate from other processes like for example heart disease.

The fact that liver and spleen are enlarged could be due to heart disease, but unfortunately other causes are still possible.

If you require to discuss any results of the fluid sample please do not hesitate to write back to pet coach or engage in a consultation.

Q. I just adopted a Scottish Fold straight ear kitty and have to transport him halfway across the US. What should I be prepared to do when he arrives?
ANSWER : A. So as to not overwhelm him in his new home, you may want to start with a small space for him gradually opening up his environment as he becomes more comfortable over a few weeks. This can be done by placing all of his items in one room. That includes an area where he can perch up high whether in the form of a cat tree or a window ledge lounge seat for example, food & water dishes, litter box (away from the food dishes), toys such as little mice and balls, infused cat nip toys, and a nice soft kitty bed. If he is coming with a towel or blanket, do not wash it and instead lay that in his bed. That will help him feel secure until he becomes acclimated to new surroundings. Also, if he is coming in a small crate, just open the door and let him come out to investigate the new place in his own time. Enjoy your new kitty!

Q. We have a 3 yr old Weiner dog, she is having pus in her eyes, I took her to the vet he gave me derma vet ointment, used it as the doctor prescribed
ANSWER : A. If the pus really isn’t all that bad, and it’s just some discharge, your pup may benefit from a diet change. It could be that the food you’re feeding just isn’t right for your dog, and that’s okay! Dogs grow and change over time, and now that your dog is fully matured, a diet change may be in order. Try something like Taste of the Wild, maybe a grain free dog food, Orijen, or Ziwipeak. These are all really great food options.

If the pus is really bad, and continues to get worse, see your vet again and let them know what’s going on. Maybe you could try a diet change, and then see if there are any improvements.

Remember, you should always gradually change a dogs diet. By gradually, I mean you put a tiny bit of new kibble in with a bowl of the old kibble. Reduce the old kibble by just a few bits of kibble. Throughout the course of at least two weeks (or as long as you want depending on whether or not you want to finish off the old food) you slowly add more of the new kibble while removing some of the old kibble. This makes the process gradual, and won’t cause any tummy-upset in your dog.

Q. How can I get my 5yr old rescue dog to stop running off? He is good most of the time but then takes off and won’t stop or come back when called.
ANSWER : A. I would highly recommend not letting your dog off leash. Behavior like this can lead to injury, fatal accidents, or losing your dog. You need to start with recall training. Begin in your home in a single room and call your dog by name. Treat when he responds. Start creating a larger distance and treat when he comes. Begin working outside on leash and then work your way up to a long leash in areas with more distractions. Never let your dog off leash unless you believe 100% he will come back. Some dogs are never trustworthy off leash.

Q. My 9 month old puppy pees every time my roommate comes home. She recently moved in so I’m wondering if there’s a way to stop the excitement pee.
ANSWER : A. You can try the following:
Make the roommate’s coming home no big deal by completely ignoring the puppy. This means no hyper greetings to the dog but also no scolding. Have roommate come and go several times over and over every few minutes until that becomes less exciting. Also teach the puppy to sit for attention instead. Only say hello when the puppy is calm. If puppy looks to start getting excited again, have the roommate leave yet again. I’m sure the novelty of the new person in the home will wear off in a few weeks.

Read Full Q/A … : Leerburg