theyre… highly incompatible. look into fetal development, everything happens in a very specific order, in very specific ways, and it’s tied to hundreds of millions of years of evolution. every species alters it a little, even humans and chimps have some differences. imagine the differences youd get if your biochemistries ran on different principles. every fetus would develop like a blob. yes, you could find a mix that “works”, but it would just be a blob that doesnt come out a miscarriage. yes, there is a fix, entirely making your own fetal development process, and a biochemistry inspired by the creature you want to hybridize, but that isnt hybridization, thats playing God to arbitrarily make new animals, which arent connected to the originals, just based on them. closer to the difference between the US and Rome than the deep south and Liberia, if you get that youre a nerd by the way.