In Red Dead Redemption, bears stalk the woods in eight-bear combat squadrons. In Far Cry, they maniacally charge toward the sound of gunfire. You even have to fight them in the fucking Simpsons arcade game. And if your game has sharks? That shark's only goal in life is biting you in half, end of discussion. Despite you being far, far outside their natural food chain, every video game animal wants to eat you at all costs.
Let's take a closer look at Far Cry. Any wildlife you encounter in the series is overtly, absurdly aggressive. Warthogs, snakes, even goddamn EAGLES. Look at this madness. Has any eagle ever decided to up and leave the troposphere to impulsively peck the face off a random gunman? For something like this to happen, God has to sit on His remote, but in video games, it is every eagle's default setting.
We guess watching warring tribes go at it from above has lost some of its luster.
In Fallout, every insect and mammal within 100 yards will stop what it's doing to eat you. Even gentle creatures like a radioactive two-headed deer might suddenly decide you need to be headbutted to death. And any game with mountain lions features only one type of mountain lion: the North American Dick-Charging Puma. GTA is set in a noisy analogue of LA, but every nearby hiking trail is infested with speeding, ball-seeking cougars.
"Ball-seeking SoCal cougars? I like the sound of AAARGH! I was thinking of the other kiiiiiiinnd!!!"