First of all, I think we have to agree that bacteria are not “animals.” Animals, to me, means birds, fish, reptiles, amphibians, insects, arachnids, crustaceans, mollusks, and mammals.
Forget hand to hand combat. Obviously, some people will be screwed - if you live with a Doberman, sayonara, pal - but most people will be able to hole up. I have three cats who can scratch you but they each weigh twelve pounds. I can toss them in the basement or just kill them with ease. Most people do not have dangerous animals around the house.
The problem we face in The Great Beast War is the breakdown of industrialized society. Holing up in the house is one thing, but we’ve got to organize ourselves, and that’s going to be hideously difficult. If you think urban areas are safe from animals, you don’t know anything about urban areas. Urban areas are FULL of animals; dogs, cats, reptiles fr all sorts, raccoons, squirrels, and birds of every shape, size and description. There’s horses in most urban areas too. A shocking number of animals actually thrive in cities. If you live in any major North American city, there’s probably a thousand or more raccoons living within a thousand yards of your house, plus the squirrels, rats, mice, groundhogs, and skunks. Birds of prey are moving back into urban areas in increasing numbers, plus songbirds, crows, and gulls. And you’ve got insects, insects, insects. Most insects are just gross and can’t really hurt you, but some are extremely dangerous, such as fire ants, bees, wasps, and the more poisonous arachnids, such as black widows, brown recluses, and scorpions. Keeping such animals out of your house is hard even when they’re not at war with us.
In tropical areas… well, it gets really bad. The number of dangerous bugs goes up exponentially. Some areas will also be extremely bad for poisonous reptiles; in Australia, Africa, southern Asia and parts of North and South America you face assault from cobras, vipers, mambas, rattlers, etc.
So every time you go outside you’re going to be attacked. It would be difficult to adequately protect yourself against all possible threats; a dog protection suit will not work against a bear, and a rifle will kill a bear but not a swarm of bees. What will work against a fer-de-lance will not work against a rabid raccoon. Within cities your major problem will be stinging insects, I would think, and the few larger mammals around, like big dogs. Outside of cities, however, you’re facing larger, stronger animals all over the place, plus all the city problems. Farms will be lost within minutes as the animals slay their horrified keepers. Lines of communication will be severed and our food supply would vanish.
As for going into the water, fuckin’ forget it.
So the real problem would be organizing an effective resistance. Mass panic would set in and initial casualties would be staggering. People would be split up and want to hide in their homes. It would take a while to gather up enough people to fight back and all the while food stocks would be dwindling.
I think we’d be screwed.