Is it normal for my 6-year-old Rottweiler's black fur to turn brown?

Excess shedding can be caused by poor nutrition, parasites, etc. For a puppy so young I would make sure she is being fed an appropriate diet and is free of fleas and gastrointestinal parasites. Consider consulting with your veterinarian if the shedding does not improve. Check her coat for any signs of fleas or flea dirt and have her stool checked for parasites.

There are many different reasons a dog can lose weight and many digestion issues can cause poor coat quality and colour due to reduced absorption of many nutrients. Try feeding a high quality skin diet balanced for optimal supplement for healthy skin and monitor improvement over 4-6 weeks. Royal canin skin care or German shepherd diet would be preferred options. A blood test and assessment for pancreatic function may also need to be considered

That could be completely normal and if there are no other signs related to it (like itch, any bumps, lumps or any skin lesion) there is nothing to be worried about. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. Please find the time to give us a feedback about the consultation as that will be used to improve our service.

Simba could have a parasites such as fleas, demodex, or scapies causing hair loss. Some of these would make him itchy too, but some would not. A vet can look for these parasites during an exam with some simple testing. In terms of the food, I don't recommend a vegetarian food for dogs. But I also doubt a vegetarian diet would cause hair loss unless Simba was already really sick from it. So probably unrelated. Do switch to a regular puppy food with meat if at all possible.

This may be a normal aging change for her. As puppies lose their puppy coats the adult fur can change color and the skin pigment can darken also. If the skin looks normal with no sores I wouldn't worry about it. If she is itchy that may cause changes in the skin color. A veterinary visit is indicated if you are seeing abnormal areas on the skin.

Hello and welcome to Petco Pet Education Center, formerly Petcoach. The red patches on her stomach could be due to ant bites out in the yard/on walks, or could be skin irritation if she is licking at her vulva. Licking at the vulva and getting a moist pyoderma (little red spots or infection) is common in young unspayed females as they often get vaginitis. The treatment is to have her spayed. Also, check the yard for ants or other little bugs that could be biting her. The hair loss around the eyes could be due to mange. If she is stressed or sick otherwise, the normal flora mange on her skin could be causing her to lose fur around the eyes. Also, she could have sarcoptic mange which can cause itchiness, but this is less likely. I would be more concerned about dermotic mange. I would recommend having her seen by a vet, and they will likely check her lymph nodes, and also do a skin scraping of the skin around her eyes. Best of luck with Cairo.

Injury/insult to follicles, sun exposure and inappropriate nutrition can all result in pigment changes to the fur. I recommend to have Coulson examined by his veterinarian to look for injury/insult and to discuss his diet to make sure it is balanced and complete. Best of luck.