The bad news was that the bugs didnât die nearly as quickly as other studies had found, a mere hour or two at -16Â° or -17Â° Celsius. âIn our study, bedbugs survived lower temperatures, with eggs surviving in short-term exposures â¦ to temperatures as low as -25Â° C,â the researchers write. But the bugs are not freeze tolerant, the scientists found, and they can be killed â no matter their stage of life or feeding status.
1 The average weight of the hippopotamus male measures around 1.500 â 1.800 kg (3,300 â 4,000 lb). 2  Males are slightly heavier as compared to females. 3  However, females weigh around 1,300 â 1,500 kg (2,900 â 3,300 lb).
Pygmy Hippos. Pygmy hippos are smaller cousins of the hippopotamus that are native to West Africa. Of the 2,000 estimated pygmy hippos remaining in the wild, most are thought to be in Liberia, with smaller numbers in of Sierra Leone, Guinea and the Ivory Coast.The pygmy hippo is only half as tall as the hippopotamus and weighs less than 1/4 of a full sized hippopotamus.Adult pygmy hippos reach 70-80 cm in height and are believed to have diverged from the common hippo over 10 million years ago.f the 2,000 estimated pygmy hippos remaining in the wild, most are thought to be in Liberia, with smaller numbers in of Sierra Leone, Guinea and the Ivory Coast.