Problem:
Recently doing a little reading on interspecies hybrids I noticed that it seems interspecies hybrids are most often much larger than either parent. Notably, Ligers, Dzo and Savannah Cats, but it seems like all or at least most.
Required:
Question: Is there a reason for this genetic expression in hybrids?
If I am incorrectly inferring this to be the case let me know that instead.