LOL! Brings back the memories.
Since ROcky did the most damage I will
talk about his puppy days.

He never chewed up anything in the house because
he was never alone in the house.
(so all in the house was saved)

Now the outside:

He went through more than 5 garden hose's,
till I got smart and put them away till needed.
Chewed up my drip system, chewed/dug up every
plant and bush, He actually chewed down to
the stump two young trees, chewed up my
chase longe and chairs and broke 2 large
clay pots, and chewed up 2 large plastic pots,
dug trenches and I can't remember what else
but believe me he probably did it.