"Animal suffering" is by and large non-existent, especially as one comes to understand the true nature of the condition. Suffering is founded in a lack of acceptance with the Here and Now.
As animals are incapable of thinking outside of Now, it is reasonable to presume they do not suffer in any way remotely akin to humans, who of course commonly think outside Now.
Like all life energy, the consciousness that inhabits a non-human form immediately reincarnates upon it's "death", so in truth, no true harm can be done to any animal.
Fear not for the "suffering animal". They are closer to God than most any of us and like all of us will continue to exist, albeit in new and more highly evolved physical forms. For them, as well as for all us humans, "death" is not a tragedy. It is simply just another moment in the eternal dance.