[Paladin2]

"They don't have the right to trespass on private property without a warrant."

Actually they do under exigent circumstances (which in this case apparently came from being chased by dogs - the second cop has a right to enter anyone's neighboring yard while in flight from a menacing dog.)

[Immerito]

However, they were trespassing on the dog owner’s property as there were no exigent circumstances present when they entered.