If you have any questions regarding a pet, you should be on the phone to your vet and asking them their advice.
My female dog is 10 years old and has puss in her swollen nipples and a vaginal puss discharge. I need to mention she has cured her arthritis by stealing some coffee 3 times a week. could it be the coffee?
Read this and tell me what you think---
Caffeine Poisoning
Coffee is a source of caffeine, which in large amounts can be very dangerous to dogs. How much is too much depends on many factors, such as the size of your pets and whether your dog only lapped the coffee or actually ingested coffee grounds, which contain a much higher amount of caffeine. According to Provet, caffeine is lethal at a dose of 150 mg per 2.2 pounds of body weight. A cup of percolated coffee can contain up to 100 mg of caffeine, depending on brand. Decaf coffee is safe.
Your pet might have a very serious health problem. You really need to get her checked by a professional.