As far as them ebing healthy.... Two different species all together, mixed. They have a lot in common, but a lot not in common. I imagine you have a lot of genetic screw ups in them... The DNA in each bp and bloods are meant to be combined with another of the species, so you probly get a lot of screwy DNA codes when you mix. The better idea for a hybrid would be to breed back to either a blood or a ball so you can sorta tweak the DNA.