There were two separate things that really showed me just how big those moose can get.
Once, when I was out hunting rabbits, I saw a cow standing among group of trees. For some reason, I noticed which branch she was feeding from. Later, when I was returning from my hunt, I walked closer to where the moose had been and noticed that the branch she had been working on was about ten feet off the ground!
The other was watching two strong men trying to load a single quarter of a moose into my pickup.