Cat people

Cat people are felines that were transformed when the comet passed by the Earth, or were born to parents that were already cat people.

Behavior
Cat people kept their behavior from when they were feline, though some have chosen to adopt human characteristics to be a full member of society. Others that lean towards their feline side may engage in behavior like hunting birds and other animals.

Biology
In humanoid form, cat people are a cross between feline and human physiology, but physically, they are nearly identical to humans. Instead of fur covering their entire body, they have the hair and skin of a human, except on their tail which is still fur-covered. They also retain their feline ears, whiskers, canine teeth. When a human and a cat person have babies, the children are born with a pair of human ears along the sides and a pair of cat ears at the top of their head The lifespan of cat people seems to been extended to be close to or possibly match that of humans, as Mino is in her early 20's at the time the comic started.

In the case of female cat people, they have a single pair of breasts instead of multiple pairs and they also appear to have similar reproductive cycles as felines (i.e., they can go into "heat"). Exactly how far the similarities extend (average number of children per pregnancy and gestation period) has not yet been addressed, or may not ever be addressed, given that reader questions about the effects of the sudden population explosion and tax benefits for cat people living with humans were not even considered when the series was developed.

Diet
Cat people have similar diets to what they had as felines, such as a preference for raw fish or hunting live birds. However, garlic is as poisonous for cat people as it is for felines and they avoid it. Companies expanded their product lines to include meals designed especially for cat people. Whether they like a particular meal from one week to the next is just as variable as it is with felines.