Is the Hudson Valley Being Overrun by Rattlesnakes This Year? If you're a hiker in the Hudson Valley, you've probably have come across different animals on your adventures. It's not uncommon to come across wildlife on a Hudson Valley hike. Deer, coyotes, black bears, foxes. These are all common wildlife in our region so it should come as no surprise when you come across our furry friends in the wilderness. This may come as a shock to some of you, but Timber Rattlesnakes and Copperheads are also common in the Mid-Hudson Region. If you're an avid hiker and enjoy the outdoors you're probably a part of a few hiking groups on Facebook. They come in handy when researching hiking conditions and parking situations.