Science news articles about 'beasts of burden'

... result of humans raising dogs as pets and beasts of burden, according to new research by a University of Calgary biologist published today by the prestigious academic journal ...

Horse breeds, plus the last truly wild horse.

... and other animals that have served humanity as pack animals or beasts of burden, scientists are now enlisting bacteria to ferry nano-medicine cargos throughout the human ...

The beast of burden lived some 3.5 million years ago near the top of the world.