10 Dangerous Animals & Creatures in Costa Rica

Our brave executive team will soon be departing their natural habitat and home comforts here in the UK to embark on a challenging and unique adventure.

As they trek, cycle and kayak through the diverse and rugged Costa Rican terrain, they will be stumbling upon untamed territory that is home to some of the most dangerous animals in the world… and they may not be the most welcome visitors!


Eyelash Viper Snake

The Eyelash Viper Snake is known to not be too kind to humans who venture too close. If bitten, symptoms include severe pain, swelling, bruising and even necrosis, which can lead to loss of a limb or be fatal!

American Crocodile

Reports of attacks on humans by the American Crocodile are not uncommon, and with an average male weighing 450kg at a lengthy size of 4 meters, they’ll be sure to pack a hell of a snap!


Pumas are one of the largest wild cats in Costa Rica… and there have been multiple attacks and human fatalities recorded. They are known to hunt mostly at night, so best to keep one eye open!


With Jaguars possessing the strongest bite of the big cats in Costa Rica, they are sure to be avoided at all costs, especially if their usual prey is absent!


Make sure you there’s no monkeying around with this species nearby… They may look cute but get too close or find yourself on the wrong side of a monkey and you’ll regret it!


There are masses of spiders in the jungles of Costa Rica! Watch out for the Brazilian Wandering Spider, also known as the Banana Spider, this arachnid is extremely toxic. Its bite is packed full of a powerful neurotoxin, causing a loss of muscle control, and if left untreated can eventually kill through paralysis and asphyxiation. They’re usually found crawling around jungles and banana plantations in Costa Rica and love to hide in boots or socks! Eek!

Bull Sharks

Bull Sharks have been found wandering lagoons, river mouths and bays as they have the best ability to move into freshwaters from coastal seas. With this ability, comes a greater chance of contact with humans and therefore, greater risk!


The last thing you want is ants in your pants! The worst ant species in the area is known as the Paraponera Clava. Nicknamed the Bullet Ant, this tiny creature has an extremely painful sting that you won’t forget!


In remote and dense areas, the likelihood of these flying creatures carrying diseases is greatly increased. A little bite means humans are susceptible to nasty diseases including dengue, resulting in a high fever, headache, vomiting, skin rashes and muscle and joint pains!

The Poison Dart Frogs

These brightly coloured frogs possess this intense hue as a warning! The poison in their skin can cause swelling, nausea, and paralysis if touched or eaten. Some species can be deadly, including the golden poison dart frog which has especially toxic skin… packing enough poison to kill as many as 10 grown men!

It looks like the team will be making lots of new (unwanted) neighbours on their adventure…