The poison glands could secrete sticky fluids that the Cave Lizard Frog would coat its tongue in to use as a weapon during battle.
The Cave Lizard Frog's strong back legs and 2-ton body made it into a battering ram.
When the Cave Lizard Frog collided against a target, the poison would cause double the damage on top of the physical damage.
Bei Xu was in the bloodied, mangled state he was in because he had encountered a pinnacle Class 2 subterranean dimensional rift.
The Cave Lizard Frog had started off as a pinnacle Class 4 dimensional lifeform but evolved to Class 5 after consuming some Class 4 dimensional lifeforms.
Hence, Bei Xu was caught completely off guard and was attacked by the Sharp Shadow Bat.
Thankfully, the Sharp Shadow Bat had defended Bei Xu and kept him from dying.