While I don't agree with some of the points made here, I will wholeheartedly agree that it's all one world. A remarkable thing is the comeback made by many species amongst the humans, though that can't be said of everyplace someone has built a stone fence (so the trees don't stray). But it's certainly true where I live. For instance, I live about 20 miles from the back door of the White House, just outside of Washington, DC. If I want to see a whitetail deer, all I have to do it keep checking through the front window when I get up in the morning. Unfortunately, that also means a few collisions with deer by unwary drivers. In fact, an animal control officer had to dispatch one that wound up on my lawn with a broken hip. Two shots from a .22 rifle. She left the deer for me to deal with.
Other animals are out there, including foxes, groundhogs and beaver, though the beaver are difficult to actually spot, although some enterprising beaver cut down one of the Japanese cherry trees two blocks from the White House. Supposedly there are coyotes, too, but I've never seen one. I figure it's only a matter of time before we see bears and lions. As it is, there are deer within the city of Washington, DC, but there are corn fields there, too, so that isn't saying much.
Some people say we have a deer problem but if they could talk, they'd say they had a people problem. Likewise, for people who have always lived in the woods or the jungle, there is no wilderness. The animals are no wilder than the people.