Endangered animals are found on every continent and there are around 5,000 endangered animals today with 500 extinctions occurring this century. Endangered means an animal is at risk of extinction due to human activities like hunting or climate change. Polar bears, hummingbirds, and dolphins are examples of endangered animals. Polar bears rely on sea ice which is declining due to climate change. Hummingbirds and their habitats are threatened by habitat loss and climate change. Dolphins face threats from marine pollution and changing climates. Individuals can help endangered animals by adopting them, preserving habitats, building birdfeeders, planting trees, and recycling.