[BOBWADE]

The officers had permission to search the yard, They returned with a police dog and were charged by three pit bulls. Looks justified to me.

[DugwayDuke]

If they could take the time to ask the first time, they could have taken the time to ask the second. The first search was over and consent was not given to an unlimited number of searches. OTOH, the dog owner should have informed the officers of the dogs regardless of the fact they were in the house. But that does not relieve the officers of notifying the property owner of another search.