This one’s foul territory.

“Entitled” pet owners have taken over a popular Brooklyn ballfield — forcing some Little League teams to flee the site amid the leftover slippery dog waste and dangerous holes dug by off-leash pooches.

The 3-acre Green Central Knoll park, which sits on the border of trendy Bushwick and Williamsburg, has been attracting dozens of dog owners for the past few years because of the massive size of its athletic field, locals told The Post.

The canines’ owners have been dogged in their illicit use of the space — despite posted “no pets” signs and fines frequently issued to them by city Parks Department officers. 6

While the sports field was supposed to be locked up when it hadn’t been in use by permitted leagues, the pet owners “abused the fields for off-leash

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