got a little inspiration from @A-Dumb-Furry's species, as for the tank like belly, but this is nothing like that species

species: Kaimmoth closed species Kaimmoths are large creatures with incubator bellies that they store newborn pups and kittens inside. They have two bellies, one for food an done for babies. Their muzzles are not sloped so that the babies are not hurt when the Kaimmoth swallows them into their incubator bellies. They store their own young there as well. They are used by pet shop owners and pet owners for incubation for newborn babies, especially if one gives birth in cold or dangerous climates. A funny twist, males usually tend to swallow the babies, females rarely do, their job is to protect the babies and the father. The height of the average male is about 5 ft, while females are 4ft. They are omnivorous. They mate for life, females can have up to 1-8 pups. A male is called a Kaigo and a female is called a kaii.