too late a repentance

God, forgive me for the cruelty that I might have unknowingly done on a mute animal. Forgive me for keeping my dearest pet away from its natural home, I tried my best to keep it nicely and after 5 yrs I have lost it. I cannot even imagine the last minute sufferings and many unexpressed pains that it went through. I shall not pet any animal again; they are meant to be free, just like us humans.
I am so sorry...