Neotenous

With their small size and rounded body shape, mice always look like they are “babies” and not fully grown, which attracts people more than rats do. This is why people find mice cute—it's their small and chubby features.Sep 23, 2021https://www.animalfoodplanet.com/why-some-people-think-mice-are-cute/#:~:text=With%20their%20small%20size%20and,their%20small%20and%20chubby%20features.