Cat Paw Close-Up Revealing Trilobate Heel Pad
Trilobate Heel Pad of Cat

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Having three lobes or lobular parts.
e.g. the heel pad of a cat is trilobate, having three rounded parts: a large central lobe in between two smaller lobes. The proximal edge of the feline heel, or its track, is noticeably trilobite.
Cf. bilobate

Illustrating Trilobate Heel Pad of a Kitten

Heel Pad of a Kitten