The Jaguar (Panthera onca) is a very large, powerful cat with a large head and short, strong legs. It is at the top of the food chain and its only predator is people.  Jaguars are found in rainforests, spending much of their time on the ground but are able of climbing trees to hunt or to rest. They use their padded paws to move silently through the forest floor. They can reach up to 1.83m in length from their nose to the tip of their tail , and grow up to 0.9m tall at the shoulder. The average male jaguar weighs about 54kg but some can weigh as much as 136kg. At birth most jaguars weigh only 1kg. Jaguars are known for their beautiful spotted coats that look like broken rosettes, rather than true spots like a leopard. These allow the jaguar to hide amongst the grasses, bushes and trees that dominate its habitat. The rare all-black (melanistic) jaguar is referred to as a black panther. Jaguars generally give birth to 2–4 cubs that stay with their mother for up to two years.  Jaguars are an endangered species and would become extinct if there were not laws to limit hunting and exporting their furs.