Trouble

[KittyGurl]

Maybe you could keep Max locked up in the back yard or in a room. You should try and train him more. If he does something bad, just say "NO" sternly, but don't yell at him this may make him more nervous. He may try to chew something up again.
Good Luck!!!

[Dreamer]

Well we should not put him in a room cause then he will chew up more things!

[KittyGurl]

Well we should not put him in a room cause then he will chew up more things!

Maybe you could keep him a a big dog cage when he starts to become bad. Like I said before:
Try and train him to not do those bad things anymore.

Good Luck!