Carnotaurus' DO NOT Swim (At least in my experience)

So I was harvesting narcoberries off the shore of a beautiful lake near my newly constructed home. I was trying to make tranq darts to tame an Argy. As I was harvesting, I hear the thumping of angry, heavy footfall behind me. I barely turn around and almost have a full-on heart attack as a Carno appears almost instantly. I spring forward into the water, knowing that I was screwed and that all of my tames would be killed, as they are not quite strong enough to fight a Carno off (mostly Pteranodons). When I was about halfway through the lake I turned around and, to my surprise and relief, spotted the Carno back upon the shore, chasing yet another victim. He did not follow me into the water. I only received one bite from him/her.

DISCLAIMER: As I mentioned, the Carno was chasing something else when I turned around, so it was unclear as to whether he could've followed me into the water but got distracted or just simply couldn't and moved on. Until you are sure, I do not recommend testing this theory, as I could fully and honestly be wrong. I just wanted to share my experience in an attempt to bring awareness to the fact that Carno's are silent but DEADLY and can bring peril to any distracted or preoccupied player. Be careful and happy hunting! <3