Newborn Kitten Paw Close-up Heel Pad
Newborn Kitten Heel Pad

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Palmar Pad
Limb pad located at the metacarpus, under the metacarpophalangeal (MCP) joint.
This is the largest of the pads on the palmar surface of the forefeet of cats and dogs.
Also known as metacarpal pad, palm pad, and [by Revealing Paws] as heel pad.
cf. plantar pad