Are there any animals

Are there any animals who have the wisdom to recognize when they are being assisted by a human, and so do not seek to attack?
I was heading to Key West back in the late 1990s when I pulled over to the side of the road near a boat ramp south of Key Largo to take a rest. The sea had gone out and left a shallow tidal pool that was fast draining water and a little moray eel about 18′′ long fought for its survival in the center of the pond. I realized that it had to be done immediately or the poor thing would die. However, this criterion is recognized for its evil bite that can inflict severe infection and is deemed