All About Reindeer PowerPoint. A reindeer or caribou is a really interesting mammal and learning about reindeer is a very engaging Christmas activity. Learn about these animals, wild and domestic. Informational text for reading practice. Learn about reindeer size, habitats, behavior, food, nesting, and conservation. Includes link to reindeer sounds, a short video of males competing for females using their antlers in battle, and a short video of reindeer facts for kids. Draw a reindeer is a fun a