Most importantly with regard to anger is that they do have an amygdala which coordinates their fight or flight response. From a purely physiological perspective, there's no reason to think they aren't capable of feeling angry.
Sharks are apex predators
As predators, sharks play a vital role in the health of marine ecosystems - by eating fish they help create balance in the food chain.
Yet sharks do communicate, by twisting their bodies into certain positions. And they act differently from day to day, depending on how much food they've eaten or how cold the water is. Scientists call those things behaviors, not emotions.
Most sharks are not dangerous to humans — people are not part of their natural diet. Despite their scary reputation, sharks rarely ever attack humans and would much rather feed on fish and marine mammals. Only about a dozen of the more than 300 species of sharks have been involved in attacks on humans.
Scientists say research off Mexico's Guadalupe Island in the Pacific Ocean shows great white sharks are sociable and will sometimes work together to increase their chances of catching prey. Their findings were published Wednesday in the journal Biology Letters.
Whale Shark
Whale sharks are among the friendliest shark species, if not the friendliest. They have been known for giving divers trips on their backs, and baby whale sharks are known to interact with humans.
"They've probably never had affection before, but I can tell you for sure, they love it, and they come back repeatedly," said Abernethy. Now, the shark conservationist emphasized he's not encouraging the public to go out and pet sharks on their own.
In conclusion, the combination of dolphins' intelligence, physical abilities, and social structure, as well as their potential to produce an electrical field, makes them formidable predators in the ocean, and this is why sharks are often so afraid of them.
What does a shark attack feel like? While each survivor describes the experience differently, a common description from shark attack survivors is the attack feels similar to being punched or bumped. Some survivors have even recounted no pain at all!
Many animals, including turtles, rays and many species of sharks, can become vulnerable to harmful bacteria through human contact, leaving them susceptible to disease.
So while it's unlikely that sharks can read our minds and know when we're in trouble, they can sense distress in other aquatic animals and respond accordingly. While we may never know for certain if sharks can sense our fear of them, they certainly have that effect on us.
A shark's sense of smell is powerful – it allows them to find prey from hundreds of yards away. Menstrual blood in the water could be detected by a shark, just like any urine or other bodily fluids. However, there is no positive evidence that menstruation is a factor in shark bites.
Just like we check under our beds for monsters, sharks check for dolphins before nodding off. That's right, the toughest kids on the undersea block swim in fear of dolphins.
According to the experts in negative shark-human interactions at the University of Florida, some of the most common agonistic displays include sharks hunching their backs (if you've ever seen an angry cat, you get the idea), bending its pectoral fins (the ones at the side, kind of where you'd think arms would be) ...
ESDs aim to overwhelm a shark's electro-sensory system. They emit electrical pulses (each one does so in a different way) that are supposed to repel the shark. So far, ESDs have been the most effective type of personal shark repellent.
Bump and bite: Bump and bites usually start with the shark circling around you, then they will engage by bumping into you then taking a bite. Usually this is like a hit and run where a shark is motivated by curiosity or sometimes, territorialism.
In general, sharks prefer to eat fish, squid and crustaceans.
In addition to those we have – sight, hearing, touch, smell and taste – sharks have two other senses, mediated by specialized receptors: electroreceptors and lateral lines. A shark's most acute sense, the one it may use to detect prey from the greatest distance, is probably its sense of hearing.
You may have heard that you can 'hypnotize' large predators like sharks or alligators by rubbing their bellies. There's some truth behind this. Tonic Immobility is a reflex characterized by a state of immobility and apparent paralysis.
Human Encounters
Because of these characteristics, many experts consider bull sharks to be the most dangerous sharks in the world. Historically, they are joined by their more famous cousins, great whites and tiger sharks, as the three species most likely to attack humans.
Nonetheless, the white, tiger and bull sharks are the “Big Three” in the shark attack world because they are large species that are capable of inflicting serious injuries to a victim, are commonly found in areas where humans enter the water, and have teeth designed to shear rather than hold.