This whale ... other whales, evolved from land-dwelling This whale ... other whales, evolved from land-dwelling animals. If you cut the leg off a salamander, it grows back. It has been estimated that the average shark loses about 30,000 to 40,000 teeth in a lifetime. These are just some of the many animals that have this amazing ability to grow new body parts. Why can some animals regenerate limbs but humans cannot? Starfish – can lose a leg and then grow a new one.. The natural world is a very dangerous place for a lot of animals and many have adapted special abilities to give themselves the best chance of survival. The natural world is a very dangerous place for a lot of animals and many have adapted special abilities to give themselves the best chance of survival. While humans can only dream of having the abilities of their favourite superheroes, there are animals in the wild with real life superpowers. All organisms, including humans, have the ability to regenerate something in the body. One of nature’s most intriguing biological miracles is the amazing ability to regrow damaged or severed body parts. How do they do this? While humans can only dream of having the abilities of their favourite superheroes, there are animals in the wild with real life superpowers. Humans, however, can't manage the trick. Did you know that there are some living things that regenerate parts of their body? Humans, however, can't manage the trick. The following ‘powers’ might even make Spiderman a little jealous. Some sharks can regenerate scales and even skin following damage. They can regenerate the same limb 50, 60, 100 times. That said, there are many animals that can regenerate perfectly throughout their lives. This hard worker not only can make copies like Xerox—regenerating a missing limb; tail; and parts of their brain, heart, and lower jaw—but it’s a favorite study subject among scientists. No mammals have the ability to regenerate a lost limb or appendage, such as a lost arm or leg. Humans can't, but some creatures can re-grow their limbs or tails or even their brains! The following ‘powers’ might even make Spiderman a little jealous. This can occur because shark teeth are not attached to a bone, but instead are developed within a bony cavity. The reasons are far from simple, and to some extent are still a bit of a mystery. Certainly, The first one that comes to my mind is Ambystoma mexicanum Also known as the Axolotl or the Mexican walking fish, is a neotenic salamander related to the tiger salamander. If you cut the leg off a salamander, it grows back. In most species the new leg is thinner and shorter than the original leg. Regenerating body parts help animals in a number of ways such as defence.Further research on such animals can help scientists to develop medicines for diseases like cancer where organs can be regenerated utilising the chemicals present in them which is responsible for regeneration. For example, it may dropped the legs while escaping from predators that have caught onto its limbs. Certainly, The first one that comes to my mind is Ambystoma mexicanum Also known as the Axolotl or the Mexican walking fish, is a neotenic salamander related to the tiger salamander. Spiders are able to regrow or regenerate their lost legs after a number of moults. Animals including seastars, salamanders, planarians (flatworms), crabs and some fish are all capable, to varying degrees, of body part regeneration, ranging from limbs to tails, and on to even eyes and internal organs.