BBCNEWS BBC News October 17, 2021 02:23:00
I don't think it is known, completely, it is probably a combination of genetics and environmental factors. over my career, i'm a veterinarian,, but i happen to be a reptile veterinarian, and over my career, i have seen maybe three or four reptiles with two heads. everybody else has died, passed away, within the first week of life, and this guy, no, he is thriving. the colombian government has begun sterilising a growing population of hippos left as an unwanted legacy after the death of the notorious drug lord pablo escobar nearly 30 years ago.