Okay, some of the forest scenes were real. The crew shot in Penshurst Place in Kent, England. It’s a medieval manor with epic grounds.
Where was Beauty and the Beast filmed? ~ Atlas of Wonders | Beauty and
They also used Burnham Beeches, a famous woodland in Buckinghamshire. This forest has been in films for over 100 years. You’ve seen it in Harry Potter and Robin Hood too.
The wolves in the forest? Real wolves. They were trained by a handler. But the pack that chased Belle? That was a mix of real wolves, puppets, and CGI. Because why not confuse everyone?
