Honeypot ants, also called honey ants, are ants which have specialized workers that are gorged with food by other workers to the point that their abdomens swell enormously. Other ants then extract nourishment from them. They function as living larders
Crabs in Glass Houses.Scientists at the New Zealand Marine Studies Centre placed glass shells into a hermit crab tank. The crabs moved into the glass shells shortly after, allowing scientists to study the crabs.