Animals that eaten corrupted beings tend to mutate. The mutation could cause good or bad effects depending on the mutation.
For the dogs and cats, it was their increased body size. The improved intelligence happened to everyone who had the capability to think. Even insects like mosquitoes were being economical by keeping their prisoners unconscious but alive, so they could harvest more blood as much as they could get.
On the other hand, their intelligence might have not increased but their instincts surely did.
These first batch of fishes can't be sold at the marketplace for consumption, yet they have no choice but to hunt them.
Gilbert continued narrating their experience yesterday and it gave everyone the understanding that as long as you don't swim towards the fishes, they would never catch up to you when using Waterstriding.
