See Animals That You Didn't Know They Exist.

 
The Raccoon Dog, or Tanuki, is a canid indigenous to East Asia. The raccoon dog is named for its resemblance to the raccoon, to which it is not closely related.
They are very good climbers and regularly climb trees.
 
These monkeys live in the foothills of the Himalayas, between 3,000 and 4,500 metres above sea level. They experience frost for around 280 days of the year and often contend with snow more than a metre deep. They live higher than any other primate except.

 
Also known as the Kiwaidae, this crab is a type of marine decapod living at deep-sea hydrothermal vents and cold seeps.  The animals are commonly referred to as "yeti crabs" because of their claws and legs, which are white and appear to be furry like the mythical yeti.

 
Pacu is a common name used to refer to several common species of omnivorous South American freshwater fish that are related to the piranha. Pacu and piranha don't have similar teeth, although the main difference is jaw alignment; piranha have pointed, razor-sharp teeth in a pronounced underbite, whereas pacu have squarer, straighter teeth, like a human, and a less severe underbite, or a slight overbite. Additionally, full-grown pacu are much larger than piranha, reaching up to 0.9 m (3 feet) and 25 kg (55 pounds) in the wild.

 
This creature has a lot of characteristics that make it very important to human beings.  For one it is resistant to cancer.  They also live up to 28 years, which is unheard of in mammals of its size.  It seemingly does not age much in those 28 years either.  It remains “young, healthy and fully fertile for almost all its days, which for an elderly animal is equivalent to an 80-year-old woman having the biological make-up of someone 50 years younger.”  The naked mole rat is used in both cancer research and the study of aging.  Not only making it a bizarre creature, but an incredibly important creature as well.

 
The star-nosed mole is a small mole found in wet low areas of eastern Canada and the northeastern United States. It is easily identified by the 11 pairs of pink fleshy appendages ringing its snout, which is used as a touch organ with more than 25,000 minute sensory receptors, known as Eimer's organs, with which this hamster-sized mole feels its way around