What’s a substantial period of time? Like a gallop?

Edit: they only gallop when babies but they generally trot which by definition includes short periods were nothing is touching the ground.

The key finding here is that they trot which includes a suspension phase. Elephants for example trot generally only as babies and reportedly sometimes downhill as adults.

Rhinos, by comparison, even gallop.

Fucking trots. Even tankies hate them. Goddamn trot hippos.

https://www.cnn.com/2024/07/04/science/hippo-airborne-study-scli-intl-scn#%3A~%3Atext=The+team+also+found+that+hippos+almost%2Cto+a+gallop+depending+on+their+speed.