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NancyH
NancyH, Dog Expert:Rescue, Train,Breed,Care
Category: Dog
Satisfied Customers: 31958
Experience:  30+ yrs dog home vet care & nursing, rescue, behavior&training, responsible show breeding, genetics
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My dogs anus and skin under her tail has turned black, what

Resolved Question:

My dog's anus and skin under her tail has turned black, what is the cause?
Submitted: 7 years ago.
Category: Dog
Expert:  NancyH replied 7 years ago.

Is the fur worn off under the tail area or is this a breed that is clipped down?

How long has this been going on?

Is the skin on her abdomen darker too?

Is she spayed?

Customer: replied 7 years ago.
the fur is worn off. from dragging. She is a cocker spaniel and has trouble expressing her glands the skin on her abdomen is darker and black in spots. She is spayed.
Expert:  NancyH replied 7 years ago.

This may be due to a couple of problems.

One is her anal glands may be clogged resulting in the dragging you are seeing. You can read about this issue here

http://www.marvistavet.com/html/body_anal_sacs.html

Dog skin does 'tan' dark gray or black in many dogs when exposed to the sun.

Dark skin on the abdomen can indicate a problem with a lot thyroid level which can trigger allergies and skin infections. Itchy skin folds around the vulva area can trigger scooting like you are seeing too. You can read about low thyroid in dogs here

http://www.marvistavet.com/html/body_hypothyroidism.html

Another possible hormonal issue that can cause a darkening of the abdomen and skin issues is called Cushings disease a problem with the adrenal gland. You can read about this here

http://www.marvistavet.com/html/body_cushing_s_disease.html

For short term first aid you might want to see if some plain Benadryl helps with the itching. A common low dose is 1mg per pound of dog every 12 hours. Do check with your vet about using a med but this one or another may help her a lot. If you choose to use that please read here about cautions

http://www.petplace.com/drug-library/diphenhydramine-benadryl/page1.aspx

You may also want to see if a bath (follow directions on the bottle) using a Chlorhexiderm shampoo from the pet supply store in case the problem is a bacterial skin infection will help. Malaseb is another good one to eliminate yeast from the skin.

But I think you need to have your dog checked out by your vet and perhaps some blood work done.

Hope this helps you!

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