why sauron cant breed werewolves/dragons?

[Belegorn]

Originally Posted by tom the eldest

Did sauron breed the werewolves?if so,why he dont breed them anymore?the werewolves would have wrecked gondor,and the rangers of ithilien wouldnt be so effective.after all,why would anyone patrolling in a land full of werewolves?

There were still Dúnedain in Gondor and the company that met Sam and Frodo were Dúnedain led by Faramir. These are not mere Men. They are of a different sort. Although Gondor is on its last legs at this point and I'm sure a focused effort by Sauron and his armies could certainly overthrow the realm.

It seems Sauron was doing other things. Making the trolls more cunning, the introduction of a new breed of trolls, the Rings of Power et cetera. It appears that Sauron may have had a hand in the making/breeding of Orcs himself. Melkor came up with the idea, and sometimes he'd grow frustrated in projects which Sauron would complete.