Rohn was in the backyard last night, bark, bark, barking. What was upsetting him?

Ah, Alaska, where dangerous ungulates lurk in the backyard.
(Rohn is our dog, by the way. And luckily the moose paid him no mind.)
Rohn was in the backyard last night, bark, bark, barking. What was upsetting him?

Ah, Alaska, where dangerous ungulates lurk in the backyard.
(Rohn is our dog, by the way. And luckily the moose paid him no mind.)
A moose!!!! Are they really dangerous? Because it would be cool if you could tame one and ride it around or something. :)