hind leg

takajalka, takaraaja Either of the two legs towards the rear of a four-legged animal.
1922, (w), (w)

"Can you hop on your hind legs?" asked the furry rabbit.

That was a dreadful question, for the Velveteen Rabbit had no hind legs at all! The back of him was made all in one piece, like a pincushion. He sat still in the bracken, and hoped that the other rabbits wouldn't notice.