Hoof
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The hoof is the tip of a toe of an ungulate mammal, which is covered and strengthened with a thick and horny keratin covering. Artiodactyls are even-toed ungulates, species whose feet have an even number of digits; the ruminants with two digits are the most numerous, e.g. giraffe, deer, bison, cattle, goat, and sheep. The feet of perissodactyl mammals have an odd number of toes, e.g. the horse, the rhinoceros, and the tapir. Although hooves are limb structures primarily found in placental mammals, hadrosaurs such as Edmontosaurus possessed hoofed forelimbs. The marsupial Chaeropus also had hooves.
The feet of the roe deer (Capreolus capreolus) have cloven hooves with prominent dewclaws.
Sagittal section of a wild horse hoof. Pink: soft tissues; light gray: bone; cyan: tendons; red: corium; yellow: digital cushion; dark gray: frog; orange: sole; brown: walls
An oxshoe is being nailed on the hooves of a bull used for draft at Chinawal, India, to prevent them from wearing out too much.
Trimming the hoof of a cow with an angle grinder
Toe
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Toes are the digits of the foot of a tetrapod. Animal species such as cats that walk on their toes are described as being digitigrade. Humans, and other animals that walk on the soles of their feet, are described as being plantigrade; unguligrade animals are those that walk on hooves at the tips of their toes.
Human toes
A woman's toes decorated with nail polish and henna, and wearing a metti (toe ring) on the second toe, for her wedding
Right-sided duplication of the right little toe in an 8.5 months old male, with two toes (fifth and sixth) apparently forming joints with the fifth metatarsal bone, which is mildly broadened distally. The duplicated toes have almost normal growth. The fifth toe has mild varus angulation, and the sixth toe has substantial valgus angulation.
The big toe of a human