There are a couple of things pythons and anacondas have in common. First, they are both non-venomous snakes that kill their prey by constriction. Why use venom when you could just take them down by just giving them a hug – a breath-restricting hug. Also, they are top predators whose presence spells doom for prey, and you never underestimate their ruthlessness. Of course, the wild is no respecter of person or animal, and some animals have made the mistake of testing the anaconda or python. While the anaconda is the heaviest of all snake species, the python has the most extended lifespan. So, sit back, relax as we bring you 30 times animals have messed with these big, bad slithery critters.