Dog doesn't take medicines. What should i do?

Try hiding pills in tasty treats like cheese, peanut butter, or pill pockets. Crushing pills (if vet-approved) into food also helps

Check if your cat has immune problems or an underlying illness (for example, chronic viral diseases like FIV or feline leukemia, which can weaken immunity).

I'm not sure if this is in accordance with ethical rules. One way is to use your fingers to hold down both sides of the dog's mouth, then put the medicine in with your other hand and wrap it around the dog's mouth, which may allow it to eat.