The Bad Cats think they're getting a treat, but when their car stops at the vet, Iggy and Mick try to flee - to no avail In Red Letter Day, the fourth Bad Cats installment, a big day at the vet spells the perfect setting for the cats to learn the alphabet. Kids will love practicing letters and learning to read while the cats navigate a zany veterinarian's office full of lizards, kangaroos, turtles, and more