Why do dogs eat grass? Biologist explains...

From the creator

Dogs eat grass to self medicate against parasites! Watch the full episode of Puzzling Science, where biologist Jaap de Roode sits down with a jigsaw puzzle and explores one of the most surprising questions in animal behaviour: can animals use plants as medicine? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Become a channel member and get access to exclusive Q&As with our scientists: https://www.youtube.com/channel/UCYeF244yNGuFefuFKqxIAXw/join Donate to the RI and help us bring you more lectures: https://www.rigb.org/support-us/donate-ri Our editorial policy: https://www.rigb.org/editing-ri-talks-and-moderating-comments Subscribe for the latest science videos: http://bit.ly/RiNewsletter Product links on this page may be affiliate links which means it won't cost you any extra but we may earn a small commission if you decide to purchase through the link.

Published 2026-08-18 · Watch on YouTube ↗
Availability and playback restrictions are controlled by the original channel.