Clips from the NATURE episode "Holy Cow!" show the cow's digestive system and illustrate other naturally evolved and artificially selected traits of cattle.
This video-enhanced lesson focuses on how and why humans have been so successful in selectively breeding cattle to suit our needs, while also exploring the limitations and consequences of this success. (Grades 9-12)
Produced by THIRTEEN ©2014 THIRTEEN Productions LLC. All rights reserved.
PBS is a 501(c)(3) not-for-profit organization.