hybrids meaning a mix of human and animal, They can transform to their human form only in a state of love (Both parties), like kisses, hugs, making love.. anything have a feeling of love, hybrids when on its animal form will act just like a normal animal, can't speak or doing anything human does but can understand humans' language. And there is a little similarity, as when Jungkook transforms to his human form, he'll have bunny ears, a tiny bunny tail and some cute bunny's behaviors