Experienced and professional animal trainer provide their insights in answering this question :
A. Professional exploration and cleaning of the wound should be performed. Surgical treatment can not be necessary but it should be evaluated by a specialist

How to Identify Common Pet Problems ?

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

The tail tip first becomes hairless. In addition to hair loss, the skin itself may already be bloody or brittle. In later stages, the skin on the tail-tip turns black and may exude a foul smell. Affected dogs scratch and bite at their tail vigorously. A dangerous, critical complication of this condition is septicemia.
These gangrenous or necrotic tissues will almost always require excision or amputation in order to prevent sepsis and eventual death. This process is known as `debridement` and usually takes the form of cutting dead flesh away from an existing wound.
It is a problem right through the production cycle because necrosis symptoms can also be seen with weaners and feeders. The symptoms – also observable in wild pigs – start with swelling, reddening and exudation on the tail, sometimes with demarcation and tail tip loss.
Small wounds may heal over on their own, while old or highly contaminated wounds may be left open at first and closed at a later date. Surgical closure for more severe wounds may be done with sutures or staples. Drain tubes may be inserted in a closed wound to aid in drainage, especially if there is an abscess present.
In young piglets, tail necrosis begins as a constricting ring of dead tissue that then restricts the blood supply from this point onward to the extremity. The tail has a brown, rigid, retracted, and brittle wound that breaks easily.
Sometimes necrotic tissue will fall off on its own through the natural healing process that your pup goes through but if the wound is extensive enough your dog may need surgery to remove the dead tissue.
A necrotizing soft tissue infection can destroy skin, muscle, and other soft tissues, and, if untreated, lead to death.
These include surgical debridement, biological debridement, enzymatic debridements, and autolytic debridement. This is the most conservative type of debridement. This debridement is a natural process by which endogenous phagocytic cells and proteolytic enzymes break down necrotic tissue.
The infection often spreads very quickly. Early symptoms of necrotizing fasciitis can include: A red, warm, or swollen area of skin that spreads quickly. Severe pain, including pain beyond the area of the skin that is red, warm, or swollen.
Your bite may take as little as 7 days or as long as several months to heal, depending on how bad it is. Taking good care of your wound at home will help it heal and reduce your chance of infection. The doctor has checked you carefully, but problems can develop later.
In most cases, your dog will heal just fine without any medical intervention. However, if the wound does not seem to be healing properly, you should take your dog to the vet. One of the ways to check fast and quickly if you have to go see the vet urgently is to use vet chat online.
Wherever possible, a wound will be closed and sutured in order to speed healing. However, if there is gross contamination or deep infection present, the wound will be left open for topical treatment and to ensure drainage.
There are two main types of necrotic tissue present in wounds. One is a dry, thick, leathery tissue usually a tan, brown, or black color. The other is often yellow, tan, green, or brown and might be moist, loose, and stringy in appearance. Necrotic tissue will eventually become black, hard, and leathery.
Necrosis can be caused by a number of external sources, including injury, infection, cancer, infarction, poisons, and inflammation. Black necrotic tissue is formed when healthy tissue dies and becomes dehydrated, typically as a result of local ischemia.
You may feel a lump or a hard node under your skin, or the area may appear red, thickened or bruised. This is normal and expected, and usually temporary. Your tissue will eventually repair itself.
Necrosis is the death of body tissue. It occurs when too little blood flows to the tissue. This can be from injury, radiation, or chemicals. Necrosis cannot be reversed.
Necrotizing soft tissue infection is a rare but very severe type of bacterial infection. It can destroy the muscles, skin, and underlying tissue. The word “necrotizing” refers to something that causes body tissue to die.
Untreated, avascular necrosis worsens. Eventually, the bone can collapse. Avascular necrosis also causes bone to lose its smooth shape, possibly leading to severe arthritis.
There is no cure for avascular necrosis, but if it`s diagnosed early using X-rays or MRI, nonsurgical treatments such as activity modification, anti-inflammatory medications, injections, and physical therapy may slow its progression. Because avascular necrosis is a progressive condition, it often requires surgery.
Sharp Debridement or Surgical Debridement

Often performed in conjunction with autolytic debridement, this form of debridement promotes wound healing by expeditiously removing necrotic tissue and biofilm.

The most critical aspect of treating a necrotic wound involves dedicated wound care practices. Wound cleaning, debridement, and dressing will allow wound care providers to clear the site off devitalized tissues, preserve the function of affected limbs, and boost overall healing.
Necrotic tissue is a medical condition in which there are dead cells in your body organ. The death of the cells happens due to lack of oxygen and interrupted blood supply. It causes the cells to be acidic, releasing enzymes that break the cells.
Necrotizing soft tissue infections are a medical emergency. The key to treatment is emergency surgery to remove as much of the affected tissues as possible. This debridement may be extensive and disfiguring.
Symptoms of necrotising fasciitis can develop quickly within hours or over a few days. At first you may have: intense pain or loss of feeling near to a cut or wound – the pain may seem much worse than you would usually expect from a cut or wound.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. How should I interpret my cat’s tail movements?
ANSWER : A. Our feline friends express themselves in many different ways, including through the use of their tails. Most pet owners pay close attention to a happy or excited dog, but they are sometimes less attentive to the posture and movement of their cat. Here are some of the most common cat tail behaviors, and the underlying emotion behind each action:

A flicking tail: Many anxious, nervous or stressed cats will hold their tail in a low position and flick it quickly back and forth. This is often referred to as angry tail, and a pet owner or veterinarian should be on guard for any possible aggressive or defensive activity. If a cat is moving their tail slowly, and not exhibiting the flicking motion, then this cat is at a much calmer state.

Vertical position: Most of the time when a cat is holding their tail in a straight, vertical position this is indicating curiosity and a playful mood. A cat chasing after a laser pointer or playing toys will often have their tails in a vertical position showing their enjoyment. This position also helps with balanced movements. In contrast, if the tail is in the vertical position and the cat’s back is arched with pinned back ears then this could demonstrate a feeling of being threatened and thus result in defensive or aggressive behaviors.

The Tucked Tail: Similar to a dog, a tucked tail often indicates submission or fear. Your cat is conveying upset feelings and should most likely be left alone. This tucked tail appearance can also make a cat look smaller and less threatening to an aggressive cat.

The Tail Twine: Cats will often hook their tail around another cat’s tail, owner’s legs or other objects to show a friendly and affectionate nature. They are also trying to indicate whether they want to receive affection from their owners, be fed or have playtime.

The next time you are home with your feline companion take note on how they express themselves through their tail movements, their ears, body posture and vocalization. You can start to better understand their needs and wants, in addition to what makes them uncomfortable or happy. Cats will surprise you with their array of emotions and varied expressions they can express.

Q. Attacked by Pit Bull, has 5 deep puncture wounds with large area of necrosis lower back near his tail. Is surgery the only alternative?
ANSWER : A. Professional exploration and cleaning of the wound should be performed. Surgical treatment can not be necessary but it should be evaluated by a specialist

Q. What is the disease that affects vertebra on Boxer dogs?
ANSWER : A. There are lots of problems with the back that can go wrong , however one common one is Intervertebral Disk Disease (IVD). This involves a gradual degeneration of the pads between vertebrae that are used to help pad impact and protect the nerves inside the spinal cord. This can cause pain, trouble walking, paralysis and more. Many other back problems can include Wobbler’s Syndrome- a problem where the neck and back meet, or even just plain injury to the back itself. Boxers that have docked tails may also have nerve issues in the cauda equina- a group of nerves that meet at the base of the back and tail and are important in proper function of the lower organs, tail and legs.

ANSWER : A. Scaly patches of skin near the tail may be an indication of possible external parasites (such as fleas) cats may scratch or chew at this area in an attempt to relieve itching which could lead to scaly or irritated skin. Treating for external parasites can help. Skin infections may also cause a similar appearance especially if your cat has chewed or scratched at the area excessively. Preventing licking and chewing of the area if excessive with the use of a T-shirt or Elizabethan collar can help, as well as a vet checkup as needed.

Dry skin from too often of bathing or even changes in temperature (such as exposure to dry, cold air) may also happen. A soothing pet wipe or shampoo that includes aloe or oatmeal may help to soothe irritated skin and decrease flaking and dryness.

Q. What second surgery do you choose for a failed extra capsular repair or should a second surgery be done?
ANSWER : A. If you have a large breed dog, a TPLO usually works better. Also you have to figure out the reason for the failure. Was it too much activity too soon? Was the surgery not done properly? Was the rehab not followed? You have to allow at least 8 weeks of just post-op healing with rehab and then slowly get back to normal activity. A good 12-14 weeks before any type of normal activity is recommended and some dogs take longer than others. It’s hard or many dogs and even people to restrict their pets activity level post-op because they feel bad, but it really is necessary for proper and complete healing. It’s hard to say why your surgery option failed or if you should have a second one done without knowing your case in more depth. I would recommend a board certified surgeon perform the surgery if it is done again and you didn’t use one the first time.

Q. My dog likes to walk around trees and bushes. I noticed today a rash on his back in a straight line and his hair is gone in the area. Help?
ANSWER : A. If you live in a brushy or wooded area it is possible that your dog may have come into contact with an irritant such as poison oak or poison ivy. These can spread to people, so care should be taken when handling the area by using gloves and washing hands. You should also prevent your dog from licking or scratching at the area to prevent the spread of irritation. Topical ointments for pets can be used to treat oak/ivy infections.

Other causes such as allergies, cuts and scrapes, or even external parasites can cause redness as well. Ticks and fleas are common in wooded and brushy areas, so making sure your pet is on a preventative for these is important.

If the rash appears to have any cuts, scrapes, open sores, hair loss or spreads, then making an appointment with your vet is best. Your vet can take a sample of the area to look for any more serious infections causing the redness.

Q. Dewey has open gash on rear hind leg; not bleeding, but very raw. What can I use to help heal wound?
ANSWER : A. Even if the wound is not actively bleeding, if it is very large (more than an inch or two) or you can visibly see tissue or bone underneath it, it is best to seek veterinary care. Your vet will likely recommend suturing up the wound to prevent infection and other debris from getting inside and taking hold. In larger wounds, antibiotics may also be given preemptively, or a temporary drain placed to keep bacteria from sitting under the skin.

If the wound is small and minor, keeping it clean and dry is the best for preventing infection. A clean warm wet washcloth can be used to clean out any dirt or debris, and then lightly dried with a dry washcloth. Do not attempt to place any over the counter medications unless instructed by your vet as many can be toxic. Keeping your dog from licking or chewing at the wound will also help prevent an infection. Signs of infection to look out for include discoloration, pain, swelling, redness or discharge that is green or yellowish in color. If you see these signs, making an appointment with your vet is best.

Q. My dog arm was ran over by a tire , he was checked no broken bones but he has wound, how do I clean it at home
ANSWER : A. Wound management depends very much on the depth nad size of the wound, location and nearby structures and other complicating factors such as age of dog and infections etc. Your vet should have provided advice on this, a quick call to the office should confirm the best options. Sterile saline and dilute surgical disinfectant such as chlorhexidine can be used to clean surface wounds and shallow grazes may benefit from topical ointments but deep wounds or those near joints should be fully assessed and stitched up as required