Can we get humongous tigers and lions by selective breeding?

Humongous? No. There are two reasons for this. First, selective breeding will only increase or decrease size by a matter of percentages in a short period of time. In centuries, you can separate out subspecies that are say, twice or more as large. read more

No. There are two reasons for this. First, selective breeding will only increase or decrease size by a matter of percentages in a short period of time. In centuries, you can separate out subspecies that are say, twice or more as large. Over millenia, you get the range we see in cats and dogs, with tigers at the top end of the cat range. read more