Having owned and loved a coatimundi when I lived in Mexico, I will admit to having a bit of a soft spot for the raccoons (same family of animal, very similar in many ways). However, I love my chickens way more!! I'm surprised that no one has yet mentioned our #1 controller of all of the mammal pests--an LGD (livestock guardian dog). In our case, it's our Great Pyrenees, Cassie! I got her after our guard llamas showed no protective behaviors at all when a couple of feral dogs got into our pastures with our alpacas and am soooo glad I did!! She immediately understands when I introduce her to a new animal that it "belongs" to her now and is incredibly protective. Totally nocturnal, she sleeps most of the day and patrols the fence line most of the night. When I had to do middle of the night bottle feedings one summer when there was a bear problem in the neighborhood, it was so comforting to have her right there the whole time. As the daughter of a vet with 6 dogs at present, I can honestly say her intelligence is way above and beyond average!
So far, Cassie has dispatched two raccoons and a groundhog this year; we've also had a fox looking over the fence at the chicken coop many times since spring, but I doubt it will dare to come any closer with Cassie here. I was boarding 2 ducks and a goose for a couple of months in the fall, and I set them up with a run area outside the pasture fence but a night cage inside the fence line so they'd be on Cassie's side for protection. (I do still lock up all birds at night). One night Cassie was barking all night like a maniac but I couldn't really see anything wrong from the house and the alpacas weren't acting alarmed. In the morning, however, we discovered a huge raccoon treed right next to the ducks' cage and that thing wouldn't come down till we cut down the branch and chased it off. Under the tree, the ground showed that Cassie had obviously been pacing there a lot!!
Anyway, I know getting a large dog is a very large commitment, but what she returns to us in love and peace of mind is worth every bit of the time and money it costs to have her!!
Beth