Britannica Sources used in this answer

What do squirrels eat?

Which ground squirrel is mainly vegetarian?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Do squirrels forget where they hide their food? — squirrel Overview of food-burying behaviour in squirrels.

While most ground squirrels are omnivorous—consuming a mix of plant matter, insects, and occasionally small vertebrates—the Uinta ground squirrel of the Rocky Mountains is primarily vegetarian, feeding mostly on green plant parts and seeds.1