This comes under the I don't know Jack category. I do know that a 150 - 180 pound adult normally takes 500 mg once to three times daily and that bromelain is a natural compound found in the pineapple plant (most commercial bromelain is harvested from the pineapple stems).
I will happily throw this question open to input from others and say that Shirley's Wellness Cafe is one of my favorite sites for our four legged friends. Two legged ones too.