Camels and elephants are also said to hold long-term grudges. One Indian man who left his camel tied up in the heat all day had his head severed from his neck by the animal. There's a lesson there, too: if you're going to mistreat a camel, wear your Cheney mask.
A 2011 study revealed crows can remember the human faces who capture them. According to another a study published in the journal Animal Behaviour, ravens which include crows, jays and magpies, have the ability to 'hold grudges' for up to two years.
There are many of examples of animals retaliating for harm imposed on them by people, such as the infamous Siberian Tiger that apparently stalked and killed a hunter.
Indeed, studies have shown that chimpanzees and macaques not only seek revenge, but often do so intelligently — for instance, if they see that their adversary is stronger than them, they attack a weaker relative instead.
There are a lot of animals that will seek revenge if wronged, these include great apes, rhesus macaques, elephants, orcas, bottlenose dolphins and magpies.
Tiger. Also known as “the king of beasts,” the tiger is well-known for its ferocity, Earthly power and anger.
Animals with no natural predators are called apex predators, because they sit at the top (or apex) of the food chain. The list is indefinite, but it includes lions, grizzly bears, crocodiles, giant constrictor snakes, wolves, sharks, electric eels, giant jellyfish, killer whales, polar bears, and arguably, humans.
In early Christian art, cats were seen as symbols of both lust and betrayal.
Coyote is the trickster and betrayer for the N American First Nations, scorpions, jackals, crows all figure in various belief systems as betrayers.
Humans are not the only creatures that can feel regret. According to a new study, in certain situations, rats, too, can regret past decisions, National Geographic reports.
But animals are really smart. They hold grudges, they take revenge at the most unexpected ways.
Cats never forgive.
Scientists have observed similar behaviors in non-primates like goats and hyenas; the only species that has so far failed to show outward signs of reconciliation are domestic cats.
The new research shows that dolphins have the longest memory yet known in any species other than people. Elephants and chimpanzees are thought to have similar abilities, but they haven't yet been tested, said study author Jason Bruck, an animal behaviorist at the University of Chicago.
Importantly, studies show that a large percentage of pet owners report consistent signs of jealousy in domestic pets, including horses, birds and cats. More research into the social emotions of animals other than dogs and primates may reveal that jealousy is more widespread than it appears to be.
The jealous dog sees other people or pets as a rival for your attention and love. He tries to force himself in between you and someone else or another pet. He may challenge a spouse when they try to snuggle next to you on the couch or in bed. A jealous dog may attack another pet that gets too close to you.
New research published in the journal Animal Behaviour has revealed that lemur vocalizations have specific uses other than general communication, including improving the bonds between favored friends and family members within a clan.
Honey Badger – Fights Off Large Predators
A honey badger (Mellivora capensis) makes the list of toughest animals because it doesn't back down when approached by a predator – even if it's a lion or a leopard! A honey badger is about three feet long and weighs between 13 and 30 pounds.
Honey badgers are small, but aren't afraid to take on larger animals. Honey badgers are often called the fiercest animal on the planet.
Why tardigrades are so damn tough. It's important to note: Tardigrades are basically indestructible only when they enter a special state called cryptobiosis. In harsh environments, the animals tuck in their legs and expel all moisture from their bodies. In this state, they're called tuns.
The Nile crocodile is the most aggressive animal in the world mostly because it considers humans a “regular part of its diet” according to a-z-animals.com. The animal can weigh up to 1,650 pounds and can be found in 26 countries in sub-Saharan Africa.
Sloth. When people think of the word "lazy", sloths are often one of the first animals to come to mind, and it's not surprising. They sleep for up to 20 hours a day and are known for being extremely slow-moving.