Mammals use moisture to cool off when they are hot. Cats lick themselves. Dogs pant. Some animals spit on themselves. Echidnas blow snot bubbles to cool off!
Photo Credit: Getty Images/Flickr RF/Arianna Palazzi
In the Know
The First Hot Air Balloon Flight
Scientists did not know if people could fly. They tested … read more
In the Know
In the Fall
This young scientist is looking at a leaf. He is … read more
In the Know
Similar but Different: Reptiles and Amphibians
Amphibians live part of their lives in water. Adults lay … read more