Have you ever spent a lazy afternoon in the park, just watching squirrels? They chase each other around trees, leap incredible distances, and sometimes, they stop to give you a curious look as if asking, “Got any nuts?” These furry little acrobats are more than just cute faces; they’re incredibly interesting creatures with some pretty cool quirks.First off, what exactly are squirrels? Part of the Sciuridae family, which also includes prairie dogs and chipmunks, squirrels are rodents. There are around 280 different species of squirrels, ranging from the tiny African pygmy squirrel, which is about 10 cm long, to the Indian giant squirrel, which can be as big as a small dog!One of the most common types you’ll see, especially if you live in Europe or North America, is the grey squirrel. In the UK, grey squirrels are widespread, though they’re actually native to North America and were introduced to the UK in the 19th century. Another familiar face in British parks is the red squirrel, which is native to the UK but now less common than the grey squirrel due to loss of habitat and competition.Squirrels are mainly herbivores, eating nuts and seeds, but their diet can be quite varied and includes fruits, eggs, and even small insects. They have sharp, curved claws that allow them to climb up and down trees quickly and easily, and large bushy tails that help them balance while they’re navigating through the branches.These tails do more than just help them balance. They are used for communication, too. A squirrel will twitch its tail if it's annoyed and use it to warn others of danger. During the winter, their tails come in handy as built-in blankets to keep them warm.Squirrels are famous for their habit of gathering and storing nuts for the winter. This is called caching. They’re surprisingly good at remembering where they’ve hidden their food stashes, which is crucial for getting through the colder months. However, they don’t always find all the nuts they've hidden, which means they play a significant role in planting new trees. Every forgotten stash is a chance for a new tree to grow.Another interesting fact about squirrels is their teeth. Like all rodents, a squirrel’s front teeth never stop growing. They need to gnaw on things constantly to keep their teeth from getting too long, which can be deadly. That’s why you might sometimes find them nibbling on a piece of wood or even a stray pebble.But life isn’t all nuts and games for squirrels. They have plenty of predators to worry about. From birds of prey like hawks and eagles to terrestrial hunters such as foxes and wildcats, squirrels are always on the lookout. Their solution? Stay alert and stay agile. A squirrel's reaction to danger is lightning-fast; whether it’s sprinting to the safety of a tree or freezing stock-still, they always have an escape plan.Did you know squirrels can communicate through a series of chirps? The sounds they make can tell another squirrel about the presence of a predator or to back off from their territory. Some squirrels even fake burying food if they feel they’re being watched, a trick to throw potential thieves off the scent.Despite the challenges they face from predators and their environment, squirrels are thriving in many parts of the world. They’ve adapted well to urban environments, where their antics provide endless entertainment for humans – and plenty of opportunities for snacks. In fact, in some cities, squirrels are so used to people that they’ll take food right from your hand!However, feeding squirrels, especially unhealthy food, can cause more harm than good. It can make them dependent on humans for food, which might stop them from performing natural behaviours like foraging and caching. It’s best to enjoy their antics from a distance and leave them to their wild ways.Squirrels are more than just playful creatures that scamper around your local park; they’re complex and fascinating animals that play essential roles in their ecosystems. From planting new forests to keeping the population of certain pests in check, these acrobatic little animals do a lot for our world. So next time you see one sprinting up a tree or standing up on its hind legs, take a moment to appreciate these incredible little creatures and the simple joy they bring to our lives. Squirrels can fall without injuryThanks to their incredible agility and quick reflexes, squirrels can survive falls from high up in the trees. This is because they use their bushy tails for balance and as a parachute, and their light body weight prevents them from sustaining serious injuries when they hit the ground.They help forests growSquirrels play a crucial role in shaping their habitats because they forget where they've buried some of their nuts. These abandoned seeds often sprout into new plants, helping forests regenerate and expand. This accidental gardening makes squirrels vital for maintaining healthy ecosystems.Squirrels have a clever trick to fool thievesWhen they sense that they’re being watched while hiding their food, squirrels will perform a fake burial, going through all the motions of hiding a nut without actually depositing it. They then carry it away to a safer spot. This trick helps them protect their stores from other animals that might be looking for a free snack.Flexible anklesSquirrels have ankles that turn 180 degrees, allowing them to climb down trees head-first. This unique adaptation helps them escape predators quickly and easily, making them adept at navigating the forest canopy or the trees in urban parks.Incredibly intelligentResearch has shown that squirrels are capable of a high level of problem-solving. They can navigate complex routes and remember the locations of hundreds of buried nuts. They also adapt quickly to their environments, learning to cross roads and avoid traffic, which demonstrates their ability to learn and remember.Their teeth never stop growingSquirrel’s front teeth grow continuously throughout their life. This adaptation helps them deal with the constant gnawing that wears their teeth down. To keep them at a manageable length, squirrels chew on wood and other hard materials.Many kinds of squirrelsThe family Sciuridae, to which squirrels belong, includes small ground squirrels, chunky marmots, and slender flying squirrels, among others. This family is incredibly diverse, with members adapted to a wide range of habitats across the world, from arid deserts to tropical rainforests.Squirrels can be left-handed or right-handedStudies have found that squirrels show a preference for using one paw over the other, much like humans being left or right-handed. This can affect how they gather food, build nests, and even escape from predators.