There’s a small, tentacled freshwater animal ... opens its mouth, it must tear itself apart. Hydra viridissima. Frank Fox CC BY-SA 3.0 In the 1970s, scientists saw that hydras can open their ...

Dr Stephen Gerber from Nylstroom Animal Clinic removing a duiker's skull from a giraffe's mouth. Photos: Instagram video screenshots/@stephengerber Sunday was no ...

In other words, which animal has the stretchiest mouth? It turns out there isn't a scientific consensus on this cheeky characteristic. However, there are certainly a few standout contenders.