We just adopted a stray cat, should I do anything before I introduce him to my other cats?

You should bring your new cat in to be examined by a veterinarian to make sure he is in good health before exposing him to your other pets. The new cat should be tested for FIV and Feline Leukemia; 2 feline diseases that could be transmitted to your other cats. Also, we recommend that the new pet be vaccinated as soon as the doctor recommends.