Just an off the beaten path thought but what do you think if going to happen to all the exotic animals both in the zoos and those that are privately owned. I have personally known a couple of people that own big cats. One had a tiger and the other had a pair of pet lions. I’ve had malamute huskies that weighed a hundred pounds which are sweet dogs…to their family but might be one of the few dogs that could possibly survive going feral with little problem. Places like Great Brittan have not had large predators for a long time but escaped big cats could become a problem in a place that doesn’t have the weapons to deal with them as common possessions. I would hate to have to deal with something like that with a rabbit gun. Even the dogs are going to be a problem for a little while. Feral dogs are more dangerous than wolves because they have no instinctive fear of man. I can’t imagine much that would be more dangerous than a pack of big dogs like German shepherds, Doberman pinchers, Rottweilers, hounds or pit bulls that are starving and vicious. I’ve seen this and they will take down a full-grown hog or a pretty big calf in a flash. We’ve had to hunt and kill packs of feral dogs several times. We have a lot of big hunting dogs here and a pack of hog dogs could be deadly if they were left alone without human guidance. After a few generations, some of the cattle breeds are going to return to the wild state and will not be friendly. The ones with big horns are going to have little trouble adapting. We have a lot of longhorn cattle and brahmin cattle here that are already pretty well able to take care of themselves. When people stop actively hunting predatory animals, they can make a return fast. I watched this happen here with the gators. They went from endangered species to an infestation in a very short time. They never were all that endangered here but now they are everywhere. Fortunately, our gators mostly have manners. I think that is because even when they were protected species, they would still often end up on the table so they never did lose their fear of people. After a while, if indeed we lose 90% of our population, man’s place on the food chain won’t be as secure as it has been for many centuries. Any time a place in the ecosystem opens up something is going to move in and fill that space. We have displaced the big predators in most places to the point that they are endangered but wipe out a lot of people and they will make a fast comeback. I can assure you that the polar bears that the greenies are always worried about will happily fill in for us as will the grizzly bear, the wolves, and the mountain lions.