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Experienced and professional animal trainer provide their insights in answering this question :
A. If should be healing by now. I would see a vet as there is obviously something wrong with it. May be infected but definitely needs help to heal.

How to Identify Common Pet Problems ?

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

If your dog has an open sore, it is likely that he or she is suffering from a skin ulcer. These lesions usually indicate injury, infection, or disease and require an examination by a veterinarian to determine the underlying cause. Treatment and prognosis varies depending on the source of the ulcer.
Watch for these signs: Firm, raised wart-like blemishes (squamous cell carcinomas) Rubber-like, inflamed sores (mast cell tumors) Strange-colored lumps or bumps on the lips, mouth, pads of feet, toenail beds (melanomas)
Apply an antiseptic solution

And your best bet here is an antiseptic solution. An antiseptic will chase away all the bad germs and bacteria that could possibly build up in your dog`s sore, they are what`s causing the pain.

New soft moist pink tissue should be forming in the area the wound was sustained in. If there is no new soft pink flesh forming where the wound was sustained, and you notice flesh around the wound is looking dark or feeling leathery, this is a bad sign.
It`s possible for the limp to go away on its own within a day if the injury is mild. On the other hand, if your dog can`t use their leg or move around for more than a day, or if this happens chronically, we recommend scheduling a visit with your veterinarian.
On the outside – skin infections

The affected area is often red and warm to touch. You may see spots or pustules, or a thick yellow or green discharge and an unpleasant odour. Abscesses are a deeper type of skin infection, commonly caused when something punctures the skin and pushes bacteria into the wound.

Sebaceous cysts appear as a single raised bump that may seem white or slightly blue in color. If it bursts, it will ooze a grayish white, brownish, or cottage-cheese-like discharge. These cysts usually develop on the head, neck, torso, or upper legs. False cysts (those filled with blood) often look dark.
You may hear it referred to as a cutaneous histiocytoma, too. It`s a relatively benign skin tumor that affects young dogs (usually less than 4 years old). It can sometimes be confused for other types of lumps on dogs. Histiocytomas appear on the surface of the skin as a pink-red, hairless lump.
Apply an antibacterial ointment to the wound. Triple antibiotic ointments containing bacitracin, neomycin, and polymyxin B are widely available. AVOID any product that contains a corticosteroid like hydrocortisone.
Recovery of Pressure Sores in Dogs

Some sores are able to heal in four to six weeks, whereas sores that require surgical intervention may take longer to fully heal.

Contact your vet for advice if your dog`s wound isn`t healing quickly, or looks infected. Large or deep wounds are often very painful and get easily infected. A large/deep wound should always be examined by a vet immediately.
Use a mild soap and water solution and rinse the area well. Do not use hydrogen peroxide or alcohol, as these can actually delay healing. Once the wound is clean, you will want to apply an antibiotic ointment or cream. This will help to prevent infection and will also help the wound heal faster.
In most cases, it is safe for a dog to walk calmly on an operated leg as soon as they feel able to do so, even just after surgery. This includes most dogs who have had cruciate ligament surgery or patellar luxation surgery. These dogs are also safe to stand with all four paws on the ground.
Nonsteroidal anti-inflammatory drugs, or NSAIDs, help reduce swelling, stiffness, and joint pain in humans, and they can do the same for your dog. They can bring relief to a dog with arthritis or one who`s just had surgery.
Chlorhexidine. A common skin disinfectant, chlorhexidine is known to kill the types of bacteria and yeast that commonly lead to infections in dog wounds. You can use a 2% or 4% solution, though a lower concentration is the safer route.
Many minor cuts and grazes can be managed at home, but it is important to keep these wounds clean to avoid potential infection. Wounds can be effectively cleaned with salt water – you must first boil the water before leaving it to cool. 1 teaspoon of salt to 1 pint of water is plenty and is safe to use in all species.
The tumor may appear as a small nodule, a reddish colored skin plaque, or as a papule – small and blister like in appearance, but differentiated by its lack of fluid.
One of the best ways to identify a potentially cancerous lump is to evaluate how that tumor feels when touched. Compared to the soft, fatty characteristics of a lipoma, a cancerous lump will be harder and firm to the touch, appearing as a hard immovable lump on your dog.
Cysts can look and feel different, depending on the type. They are typically slow-growing, smooth, raised bumps on or under the skin. Sometimes they ooze a discharge, and over time they can ulcerate and change shade. They are usually colored white, blue, or a dark hue.
Sebaceous cysts are also referred to as sebaceous gland tumors in dogs. These lesions can be found in any age of dog, and can be seen as single growths or occur in multiples. If you see a growth on your pet, consult your veterinarian. Sebaceous cysts can range from a benign problem to a cancerous tumor.
Sebaceous cysts: these are smaller bumps that can look like a pimple or a wart. They form from blocked oil glands and may burst and release a pasty white goo. These most commonly occur in breeds with fine hair, like the Poodle and the Bichon Frise.
Most lumps are fatty tumors, though. These are benign, meaning not cancerous. Fewer than half of lumps and bumps you find on a dog are malignant, or cancerous. Still, they can look the same from the outside, so it`s hard to tell.
Savlon`s Antiseptic cream is a form of topical medication that can be used for minor-wound care and cuts. It helps with the healing process and prevents infections from developing. If there is a scrape or cut on your dog`s skin, you should be able to use this over-the-counter antiseptic cream as a one-off.
Other over-the-counter medications safe to use on canine skin include Neosporin—an antibiotic ointment—and Benadryl cream, a topical pain reliever. “Hydrocortisone cream is usually more effective than Benadryl cream,” says Butzer. “But oral Benadryl can help with reducing inflammation in the affected area.”

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. My 6 month old Shepherd/Malamute has a sore on his lower left leg. It has been there three weeks and is not healing. It is red and about the size of
ANSWER : A. If should be healing by now. I would see a vet as there is obviously something wrong with it. May be infected but definitely needs help to heal.

Q. My 9 month old kitty had a typ 2 fractur to his back left leg. Had surgery and pins put in. 3 weeks. How long does it take to heal & is he in pain.
ANSWER : A. Surely it must be at least a bit painful but cats adapt to new conditions writhin their own body very well. Don ‘ t worry too much he will soon be back to his usual self. It should take about 6 weeks to heal.

Read Full Q/A … : Brown Freq – Scribd

Q. Is it okay to leave your dog alone on the house for over8 hrs? Will it harm him to not be able to go to the bathroom for that long?
ANSWER : A. It depends on the age of the dog. Most adult dogs need potty breaks after 6 hours. If it’s a puppy no it should not be left that long especially if it’s in a crate. No dog should be left in a crate for more than 6 hours. One month old puppy should only be in a crate for one hour. A two month two hours, ect ect until 6 hours which is the cut off for all ages.

Q. My dog has a hard time walking on his front legs. I was told he has nerve damage and he was walking on three legs now it seems to be both front legs
ANSWER : A. Problems with walking in the front legs can be caused by a large number of things. Arthritis in older dogs can cause joint pain and stiffness which may make walking hard. Nerve or muscular damage may also cause problems.

With nerve or muscle damage there is often a loss of muscle tone in the affected limbs. Limbs may look skinnier than unaffected ones, and may lose overall muscle mass. In some cases, treatment for pain or soreness may help improve symptoms some. Depending on the severity of the damage, some dogs may recover while others have permanent damage.

It may also be that if your dog was putting all his weight on one front leg to help the other, that the good front leg is now stiff and sore. Restricting exercise, giving a supplement to help joints and bones and following your veterinarian’s recommendations for care can all help your dog to feel a little better.

Q. I have a pup that haven’t been 2 1.2 months old eating good for week. I have worm her once a week since she been 2 weeks old.
ANSWER : A. It is recommended to worm a puppy every 2-3 weeks initially and then every 2-3 months so you don’t have to give her worming medications every week any longer.

Q. I have a 9 week Chihuahua and a 5 yr old Lab mix as well as two cats and we are having a flea plage in my house. How do I get rid of them quickly?
ANSWER : A. You need to use a good flea product like advocate or stronghold. Every four weeks for at least 6 months and house spray like indorex or rip. Because there is nothing that kill fleas in the pupi stage it can take 6 months of continued treatment to get rid of them all as they need to hatch before they will die.

Q. have a boerboel pup it got its first vaccine when it was about 6 wks old I havnt taken it for the 2nd one (15 days due) my pup looks fine is this bad
ANSWER : A. The pup should be seen by a vet for an exam and to continue the vaccine protocol. Puppies require multiple vaccines since maternal antibodies can block or negate the positive effects. Typically, vaccines are started around 7-8 weeks of age and repeated every 4 weeks until 16 weeks of age. One vaccine at 6 weeks of age is likely insufficient to provide protection leaving your pup at risk of serious infection.

Q. Hi. My 14 yr old beagle was just diagnosed with bladder cancer.How much time do we have? By giving peroxicam how much follow up will he need.
ANSWER : A. Bladder cancer (typically Transitional cell carcinoma) has a median survival:
no therapy – 4-6 months
with therapy (Piroxicam + Chemotherapy)- 6-12 months
Long term prognosis is grave.

There are no statistics for just Piroxicam that I came across.

It is recommended to do an ultrasound every 6-8 weeks to determine the disease status and thoracic radiographs every 2-3 months to monitor for spread of the disease.