Sloth: The undisputed champion of slow metabolism, sloths are known for their leisurely lifestyle. They sleep up to 20 hours a day and move very slowly when they are awake. Their low-energy diet of leaves and their slow movement help them conserve energy.
Koala: Koalas are another marsupial with a low metabolic rate. They sleep for 18-22 hours a day and spend most of their remaining time eating eucalyptus leaves. Eucalyptus leaves are low in nutrients and difficult to digest, so koalas have adapted to conserve energy by having a slow metabolism.
Python: Pythons are ambush predators that eat infrequently and digest their meals slowly. Their large size also contributes to their low metabolic rate, as larger animals tend to have slower metabolisms than smaller animals. When a python does eat, it can go for months or even a year without needing to eat again.
Tortoise: Tortoises are cold-blooded reptiles with a slow metabolism. They don't need to expend as much energy to maintain their body temperature as warm-blooded animals. Tortoises are also known for their long lifespan, which is partly due to their slow metabolism.
Hagfish: Hagfish are primitive jawless fish that live in the deep sea. They have a slow metabolism and can survive for long periods without food. Hagfish scavenge for food and are able to eat dead animals that are much larger than themselves.
Manatee: Manatees are large aquatic mammals with a low metabolic rate. They are herbivores that graze on seagrass and other aquatic plants. Manatees spend most of their time resting or feeding and don't expend a lot of energy.
Armadillo: Armadillos are nocturnal mammals with a slow metabolism. They have a low body temperature and burrow to conserve energy. Armadillos are also able to survive on a diet of insects and other invertebrates, which don't require a lot of energy to digest.
Lamprey: Lampreys are parasitic fish that have a slow metabolism. They attach themselves to other fish and feed on their blood and body fluids. Lampreys don't need to expend a lot of energy to find food, as they simply attach themselves to a host and feed.