Interesting and Unbelievable Facts

Lizards are reptiles with around  6,000 species . Their closest living relatives are snakes and worm lizards.  Lizards are present all over the world except  Antarctica  and extreme northern parts of the Northern Hemisphere. Four legs and feet in most lizards are their most prominent difference from snakes. They are also  distinguishable from snakes  due to the presence of external ears, movable eyelids, two lungs ( snakes have a single lung), and less flexible jaws. ( Source ) Thorny Devil, lives in  deserts  of Australia, cannot drink water directly due to structure of its mouth. It uses its feet and skin as a straw to sip water  from the sand. ( Source ) All the members of Whiptail lizards are female. They can  reproduce without male lizards,  thanks to the presence of extra chromosomes. ( Source ) Lizards can  detach their tail  for defense purposes. Most of them can re-grow their tail several time...

Mules are the  offspring of a male donkey and a female horse. The mating of male horses and female donkeys produces hinnies. Both mules and hinnies can be male or female. Both mules and hinnies are almost always sterile . It happens due to an uneven number of chromosomes (63) in these hybrid mammals. It is the result of the different number of chromosomes in a horse (64) and donkey (62). ( Source ) But exceptions to this rule have been seen. There are a few recorded cases where mare (female) mules and hinnies gave birth to babies. ( Source ) Mules are superior to horses in several ways. They are more intelligent, healthier, and live longer than horses. Mules are also surefooted and can perform better than horses in hostile terrain. Mules are generally taller and faster than donkeys. The sound produced by mules is a mixture of horse and donkey’s sound. Due to several vital qualities, humans have  used mules  in wars and for other difficult jobs since ancient ...