Would it be possible to cross breed an animals genetics into a human.Say you cross breed a lizards genetics into a person who lost a limb,could they regrow that limb like a lizard regrows it's tail?

The process isn't called cross breeding, it's called genetic engineering. This is already a possibility but there are several ethical considerations which may prevent/regulate its becoming a reality.

agreed and to add, none of what you describe is technically or ethically scientifically possible at present in humans. If it ever possible is it will be many decades away.