Domestic Cats are mammals that are typically between 5-20 pounds; they are natural hunters that take advantage of their strong claws and teeth in order to stalk their prey and pounce. They have been domesticated for over 4,000 years, beginning with the Ancient Egyptians who used to worship the cat as a goddess. Cats have many different advantages that make that good hunters. Not only do they use this claws and teeth, they also use their light-reflecting eyes that are especially helpful during the night and they have an acute sense of hearing. Cats also have an incredible sense of balance, hence why they always land on their feet, which is due in part to their long tails, agility, and nimbleness. Cats are carnivorous for the most part, using their rough tongues to completely clean the bones of their prey. However, with domesticated cats, their diets contain mainly cat food, tuna, and any other food an owner deems necessary for their cats health (1).

     

      The Jaguar is the largest cat known in South America, ranging between 5-6 feet in length, and 100-250 pounds. Jaguars have distinctive black spots all over their body and either orange or tan fur to match with the spots. They are known to be incredibly good swimmers, typically eating fish or turtles in the water. Their diet also consists of deer, capybaras, tapirs, and peccaries (3).  Keystone species are vital to the community, and the jaguar is considered a keystone species because they keep the amount of profilic rodents in balance. Without these species, the communities that they live in would be very unbalanced, causing a huge disturbance in the ecosystem (4).

     The Greenland Shark is a typically large shark that dwells in the depths of the northern Atlantic Ocean, where temperatures range from -2 to 7 degrees Celsius. They range in size from about 11-15 feet, and can weigh about 2,000 pounds. Their diet consists of marine mammals like seals, cetaceans, and sea lions, but they are also known to eat smaller animals like herring, salmon, halibut, lumpfish, and capelin (6). These sharks are incredibly poisonous, the toxin trimethylamine is present in their body and produce horrible effects. These effects include convulsions, vomiting, explosive diarrhea, stiff movements, muscular twitching, and the most severe cause would be death. Though these effects can be avoided by boiling the shark meat or burying the meat, it has caused many humans to avoid hunting and eating them, and many predators from attacking them (7).