Snuggling on a chair, hovering over a laptop, stretched out on the floor, the long haired-haired, vaguely Calico-looking Koko with his own Instagram feed is a cat influencer in the making. He is also the face of Basepaws, a feline DNA testing service that's trying to tap into the $75 billion spent on pets in the U.S.

Gingi, a sweet feline that died too young, is the inspiration behind startup PrettyLitter, a mail-order cat litter that monitors feline health. And then there's dozens of dogs that inspired DogVacay, a pet sitting app that was sold last year to Rover. Founder Aaron Hirschhorn launched a new service last fall – stem cell storage banks for pets – motivated by his own experience using the regenerative treatment.