What comes to mind when you think of dangerous animals? We’ve all seen the not-so-smart tourist walking up to buffalo at Yellowstone National Park on the news (which is a big no no). And, while these animals can pose a potential threat (in the right situation), many other creatures are more dangerous than people realize. From seemingly harmless cows to tiny ticks, here are 15 critters that can be surprisingly dangerous in the “wrong place at the wrong time” kind of moments.
1. Cows

According to many users, you might be surprised to learn that cows are responsible for more human deaths than sharks each year. They may seem docile and slow-moving, but cows can become aggressive if they feel threatened when they have calves. They can charge, kick, or trample humans, causing severe injuries or death.
2. Rats

When people think of rats, they usually associate them with disease and filth. It’s true that rats can carry diseases and pose health risks to humans. But did you know that they can also physically threaten humans? Many people have reported incidents of rats biting humans, and their sharp teeth can transmit diseases like rat-bite fever, which can be dangerous.
3. Hippos

Hippos look cute and chubby, but they are one of the most dangerous animals in Africa. Hippos are highly territorial and aggressive when protecting their young. A commenter wrote that they have powerful jaws and teeth and can easily overturn boats or attack humans who come too close.
4. Chimpanzees

Another user shared that chimpanzees are much stronger than humans and have been attacking and killing humans in the wild. They can also display aggressive behavior towards other chimpanzees if they feel threatened or there is competition for food or mates.
5. Cats

While domesticated cats are generally friendly companions, they retain their hunting instincts. Cats are natural predators and can bite or scratch humans when threatened or provoked. Moreover, outdoor cats can transmit diseases to humans through scratches or bites.
6. Mosquitoes

Mosquitoes may be tiny, but they cause more human deaths than any other animal on Earth, a bunch of people confirmed that. They can transmit deadly diseases like malaria, dengue fever, and Zika virus, causing millions of yearly deaths.
7. Ticks

Ticks are tiny arachnids that can transmit dangerous diseases like Lyme disease, Rocky Mountain spotted fever, and tick-borne encephalitis. They latch onto their hosts and feed on their blood, which can lead to serious health complications if not detected and removed promptly.
8. Wild Pigs

They can cause damage to crops and property and can attack humans. Wild pigs have sharp tusks and can cause severe injuries with their charging and slashing behaviors.
9. Buffalo

African buffalo, also known as Cape buffalo, are large and powerful animals considered one of the most dangerous animals in Africa, according to many individuals. They are unpredictable and can charge at high speeds, causing severe injuries or death.
10. Ostriches

Ostriches are the giant birds on Earth, and while they are flightless, they are recognized for their speed and powerful legs. Ostriches can deliver deadly kicks with their sharp claws, and their powerful beaks can cause serious injuries. They can be aggressive, especially during the breeding season or when they feel threatened.
11. Moose

Moose are majestic creatures, but they can be incredibly dangerous. Moose charge at humans during the mating season or when they feel threatened. Moose are large and powerful animals with sharp hooves and antlers, and a charging moose can cause serious injuries or even fatalities. Keeping a safe distance and avoiding approaching moose in the wild is essential.
12. Roosters

A final user warned that they could be surprisingly aggressive and dangerous. Roosters use their sharp beaks and spurs to attack humans, especially if their territory or flock is threatened. Their spurs can cause painful injuries and infections if they pierce the skin.
Note that not all animals are as harmless as they may seem. Suppose it’s a cow, rat, hippo, chimpanzee, cat, mosquito, tick, wild pig, buffalo, ostrich, moose, or rooster. In that case, it’s essential to respect their instincts and behaviors and exercise caution when encountering them in the wild or domestic settings.
13. Dogs

They may be man’s best friend, but dogs are known to be extremely dangerous as untrained, aggressive dogs can cause a lot of harm through attacks. Dogs kill thousands of people a year with rabies and they make up 99% of all rabies transmissions to humans.
14. Pufferfish

Pufferfish may look like cute, weird fish, but they’re actually extremely toxic. They have a substance that makes them deadly for other fish to eat, but they’re also dangerous to humans. There is enough poison to kill 30 adult humans in one pufferfish, and there’s no cure for their poison. If you ever see one, avoid touching it, especially if it’s puffed out.
15. Dolphin

Dolphins are one of the smartest creatures on Earth, but all that intelligence makes them dangerous. There are rare instances of dolphins attacking humans, though it’s not all that common. Dolphins are one of the only fish species to kill other fish for sport though, and not just food.