Don't bother with the police.
As far as chickens go, they don't even sorta care. For dogs and such I don't think they'll be much better.
I have a story about the police
Recently my uncle died of lung cancer. He had a wonderful wife (my aunt) and three boys (one is a junior in high school, another I believe is a sophomore in college, and the last just graduated from college.)
The sophomore (we'll call him Bob for privacy's sake
) is I believe 19 (please don't count on any of this information like grades and ages
I tend to get this stuff wrong!), and nothing is really going his way. He now owns and runs the company of his dad, who is now dead (for just that I want to hug the poor guy constantly) and due to both of those things, his grades are falling and because he had his first big tests of the year coming up, he had to get good - great - grades on them to pass his classes with good grades.
So he drank. Not a lot, but enough to get him feeling a little foggy. He thinks someone is breaking into his house, and for pretty much the first time (his parents usually work from home - well his mom now) with his little brother. I don't know for sure if someone was, but Bob was scared (as I would be too!!).
One of his neighbor's is a police officer, so he went to his house and rather than helping Bob, the police officer arresting him for breaking and entering. Helpful. He was put in jail for a week after having done nothing wrong, but the police refuse to drop his felony. In fact the police officer plans to sue Bob.
Then Bob went to his neighbor's house and begged him to drop the charges because he did nothing wrong (well... besides drinking, but that's not a felony) and rather than showing any sort of compassion, he files a restraining order against my cousin.
Then he charged him with breaking the restraining order by driving past his house. Except Bob wasn't even in town that night. Then when he had just gotten cleared of all charges and was in the courthouse waiting to be released, two police officers came up and arrested him for violating the restraining order.
*Loss of all faith in the police.*
To the real point - you could certainly go to the police, but I doubt they'd help without complete proof. Probably wouldn't even bother to come to the scene, just put in a really vague report.