Puppy Paw Numbered Toes Revealing Paws
Toes of a Dog's Paw

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A digit of a foot.
Toes are named and identified by Roman numerals.
In a  pentadactyl (five-fingered or five-toed) arrangement, the most medial digit, if present, is I (e.g. the human thumb) and the most lateral is V (e.g. the human little finger).
In dogs and cats, toe I (the dew claw) is often  vestigial.
Also known as digit.