Feeling the suffering of others, the Lord said, "Why persecutest thou Me ?"
I am the Self dwelling in the Heart of every being; I am the beginning and the middle and also the end of all beings. (BG 4:22)
"It is not they who are receiving the beatings, it is I. The suffering is mine." - Bhagavan Ramana (source)
See also: Animal Cruelty, Alternatives to wool, Do Animals have rights?