Janus the two-headed tortoise turned 25

Janus the two-headed tortoise just celebrated his 25th birthday. Thought to be the longest-living two-headed tortoise, Janus has a lot of heart—two, to be precise—along with four lungs. He resides at the Geneva Natural History Museum. From Reuters:

He is under constant surveillance in case he flips over, which could be fatal, and survived a bladder stone operation in 2020.