The definition of hoof
noun, plural hoofs or hooves [hoovz, hoovz] for 1, 2, 4; hoof for 3.
the horny covering protecting the ends of the digits or encasing the
foot in certain animals, as the ox and horse.
Thus the animals that you show do not have a horn covering the entire foot, (as with a horse or ox), nor do thy have a single division in the middle. Their toes are not covered. Thus a horse has a single hoof (and is not kosher) and an ox has a split hoof.
Vayikra 11:3
Any animal that has a cloven hoof that is completely split into double
hooves, and which brings up its cud that one you may eat.
That is, the split is on the entire hoof with an opening at each end like an ox. A horse has an opening at one end but is closed at the other. That is why a horse hoof is shaped like a U ,while an cow hoof or a sheep hoof is like ( )
Another example shows the picture of a camel hoof on top and from below. The pictures which presented show that (1) the camel’s foot is not a hoof, and (2) it is not completely split. The pictures show that the two branches of the foot are joined at the rear. The pictures viewing the foot from above show that the foot is not really a hoof, but that the two branches look like toes with toenails.
