#1 Dogs. First on our list of the top 10 friendliest animals in the world is man's best friend – dogs.
#3: Chimpanzees
Chimpanzees are very smart animals and are able to solve many different problems posed to them by human trainers and experimenters. Our closest genetic relative comes in third place on this list of the most intelligent animals.
The Javan rhino is the rarest large mammal on the planet, and none are in captivity, according to the World Wildlife Fund. They're a shy species used to living in dense tropical forests, which are tough to replicate in captivity, Mizejewski says.
The quokka, a small marsupial native to Australia, is one such example of a species vulnerable to extinction in the country's harsh surroundings. Known as the “happiest animal in the world” due to its cute and friendly appearance, these creatures are now only found in a few isolated forests and small islands.
We share the vast majority of those genes with the mammalian species, but only humans (and occasionally our close primate relatives like chimps and bonobos) kiss.
The smiling marsupial is a favorite photo subject for tourists on West Australia's Rottnest Island. Until recently, many people outside of Australia had never heard of thequokka, a Muppet-cute (despite its beady eyes and rat's tail) marsupial with an irresistible smile.
The quokka, a close cousin of the kangaroo, rocketed to internet fame when tourists began taking selfies with the animal, which is unafraid of humans and appears to smile for pictures.
The vaquita, a small porpoise found only in Mexico's Gulf of California, now faces extinction, scientists say in a report published today. Only about 30 individuals remain, according to an acoustic survey that counted the animals' clicking noises last summer.
Vaquita. On the brink of extinction, the vaquita is the smallest living species of cetacean. The single rarest animal in the world is the vaquita (Phocoena sinus).
The passenger pigeon (Ectopistes migratorius) became extinct at 1 p.m. on 1 September 1914 with the death of Martha, the last surviving member of the species, at the Cincinnati Zoo.
Some researchers say pigs are even smarter than 3-year-old human children! Pet pigs can learn lots of circus tricks. They can learn how to find food using a mirror and even how to play video games using a joystick! Check out this video of a pet pig performing tricks!
Unsurprisingly, chimpanzees are one of the most intelligent animals on this planet—next to humans, of course. Similar to how humans inherit their intelligence from their mother, a chimpanzee's intelligence also greatly relies on their genes.
Cats have a 200 times stronger memory than dogs and can recall the details of a day for up to 16 hours. Although dogs may be better at helping people, cats have much more sophisticated brains. Dogs only have 160 neurons in their brains compared to cats' 300 neurons, making them one of the smartest animals in the World.
The rarest animal in the world is the vaquita (Phocoena sinus). It is a kind of critically endangered porpoise that only lives in the furthest north-western corner of the Gulf of California in Mexico. There are only 18 left in the world.
The vaquita is the most endangered cetacean in the world. With as few as around 10 left, the species will become extinct without a fully enforced gillnet ban throughout their entire habitat. WWF is urgently working to ensure they can live and thrive in their natural habitat.
When ants get lonely "They're unable to digest their food properly and walk themselves to an early death ..." The results show that isolated ants lived only six days, whereas group-living ants lived up to ten times as long (averaging 66 days of life).
Silver-headed antechinus
This small-shrew like marsupial is considered one of the rarest mammals in Australia. In fact, until 2013 we had no idea they even existed. They favour high altitude open-forest habitats in central Queensland.