Two-headed snakes typically occur in the same way that Siamese twins do. A developing embryo begins to split into identical twins but then stops part way, leaving the twins joined. Snakes operate a good deal by smell, and if one head catches the scent of prey on the other's head, it will attack and try to swallow the second head.
A rare two-toned lobster. The odds or finding a half-and-half lobster are 1 in 50 million to 100 million.
Qiao Yubo, is pregnant with at least five babies, walks with her husband. Qiao, who is 1.67-meters tall, has a waistline measurement of 1.75 meters, five months into her pregnancy.
The world's smallest fish. The fish is a member of the carp family.