Answer:
One dog could be overtly loving and one could bark at a simple engine rev. The dog that is loving wants to please you, wants you to show it love back. The other dog is scared, maybe the dog was hurt before so it wants to hurt you before you are able to hurt it. Its a sad thing, but dogs run on pure instinct, unlike humans who run on intuition.
Explanation:
Answer:
He was depressed and feels like every one doesn't deserve to live
