NET
6 “After these things, as I was watching, another beast like a leopard appeared, with four bird-like wings on its back. This beast had four heads, and ruling authority was given to it.
Darby
6 After this I saw, and behold, another, like a leopard, and it had four wings of a bird upon its back; and the beast had four heads; and dominion was given to it.
KJV
6 After this I beheld, and lo another, like a leopard, which had upon the back of it four wings of a fowl; the beast had also four heads; and dominion was given to it.