Bow Wow to Knox Farm State Park In East Aurora.  WIVB news took a poll of best dog parks, and Knox won.

Lunja

Why?  WIVB reports that,

Historic Knox Farm State Park sits on 633 acres of land in East Aurora. Seven of those acres are specifically dedicated to mans best friend!The enclosed dog park has plenty of room for pets to roam and play. There are specific sections for smaller dogs and bigger dogs and around 5 miles of trail if you want to get a nice walk in!

The park is open from dusk until dawn daily.

For a map of Buffalo doggie parks here ya go.