Cephalexin is an oral antibiotic that is used to treat bacterial skin infections in dogs, such as pyoderma, as well as other infections including urinary tract infections, respiratory tract infections, and ear infections. It is available in several forms, including capsules, chewable tablets, and oral suspension. Cephalexin works by inhibiting the growth of bacteria, thereby clearing up the infection. It is important to note that cephalexin should only be used under the guidance and prescription of a veterinarian who can determine the appropriate dosage and duration of treatment. Additionally, cephalexin should not be used in pets that have a known hypersensitivity or allergy to cephalosporins, and should be used with caution in pets that are sensitive to certain other antibiotics including penicillins, rapamycin, and carbapenems. If your pet vomits or seems unwell after receiving the medication, try giving it with a small amount of food.