Female caribou grow antlers as a built-in postbirthing snack

image via New Scientist

February 24, 2026, 3:43 PM

• •Female caribou are the only deer species where females grow antlers.
• •Caribou mothers shed antlers shortly before giving birth.
• •Antlers provide a readily available source of minerals for caribou after giving birth.
• •Antlers may also help females avoid aggression from older males and act as a defense mechanism.

A recent study reveals that female caribou gnaw on their shed antlers as a post-birthing supplement. This behavior provides essential nutrients like protein, calcium, and phosphorus, crucial for nursing calves and compensating for limited grazing time. Researchers observed this by analyzing bite marks on antlers in the Arctic National Wildlife Refuge. This innovative behavior highlights the resourcefulness of animals in meeting their nutritional needs.

Read original article