Frogs will jump on top of 4 block or higher walls but then be stuck there forever because they are afraid of taking fall damage. They don't take fall damage when falling for many more blocks than most mobs though.
MC-261679
Frogs jump onto >3 block spaces and get stuck
Open
2
(Unassigned)
Community Consensus
Gameplay
Low
Mob behaviour
1.19.4, 23w14a, 1.20 Pre-release 2, 1.20 Release Candidate 1, 1.20, 1.20.1, 1.20.4, 1.21.1, 24w38a
Retrieved
Can confirm. closely relates to MC-266616, which was resolved as 'Won't Fix'