These adorable Australian spike-balls beat the heat with snot bubbles
The finding reveals how echidnas survive in temperatures that should kill them
![an echidna standing in tall grass](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/01/011723_ec_echidna_feat.jpg?fit=1030%2C580&ssl=1)
Echidnas, spiky egg-laying mammals that live across Australia, blow snot bubbles to keep cool, a new study finds.
Nuytsia@Tas/Flickr (CC BY-NC-SA 2.0)