Huge Beetle

I found this in my dog's water bowl this morning.

I live in the mountains in upper-east Tennessee.

It is over 2" long.

Anybody know what it is?

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I found it:

The speckled and horned Eastern Hercules Beetle is a Scarab Beetle that is as strong and as large as a rhino (in the beetle world).

http://www.insectidentification.org/insect-description.asp?identification=Eastern-Hercules-Beetle

Click to enlarge