Umbreon is a quadrupedal, mammalian feliform Pokémon that resembles a black cat with some lagomorph traits. Umbreon has mainly sleek black fur with luminescent yellow rings encircling its ears and tail and round yellow circular patterns on its forehead and on each of its legs. Its physical characteristics resemble a feline, with a short muzzle and a small triangular nose, but its large ears are reminiscent to a hare or a rabbit. It has red eyes, and unlike the rest of the Eeveelutions, it also has visible black-colored oval-shaped pupils that often appear slit, as well as patches of black fur of a darker shade around its eyes. Umbreon has a slightly bushy black tail with a single yellow ring encircling its thickest part; the tail thins out at the tip. Umbreon has small sharp fangs, and can be seen when it opens its mouth, similar to Sylveon