My favourites are the 'Armadillo' (cat + tortoise) and the Batlephant (bat + elephant). But I can't help thinking of their latin names too, so the 'Narwhape' would be a 'Monohomi' (genera Monodon + Hominoidea), and the 'Camwhal' would be a 'Camodo' (genera Camelus + Odobenus). NERD ALERT!