
I love mapaches (raccoons). They are such specialized and excellent scavengers. Ultimate bandits really. I recently read about a friend losing a hen to a raccoon. While such events can be deterred with predator proofing, it helps to stop and consider the animal you are dealing with. For example, consider this- Animals that have a brain with a cortex have a region that is devoted to somatic (body) sensation. Human, primates, and other mammals have localized regions to process this information. This are a can be mapped to determine regions associated with particular stimuli.
In a raccoon, the forepaw (hands) occupy 60% of their primary sensimotor area.1 While I did not find a like statistic for human hands, we do not even come close to this degree of sensory specialization. In fact, one distinct difference between human hands and raccoon forepaws is that in humans each finger sensation is processed in the same region, while in raccoons each digit is represented in individual cortical regions.2
What this means: Raccoons have incredibly intelligent hands.
While a human can tinker with something to figure it out, a raccoon is a Master Tinkerer. So if you think you’ve raccoon proofed your animal enclosures think about a creature that can open, lift, pry, unlock, reach an arm in and figure out how to make things happen. My coop is located within an enclosure (the run) covered in poultry wire. We dug a ~18″ trench around the run and extended the wire into it, curving it upward and covered it with soil. The have a lockable automatic gate latch on our door about 4′ off the ground. While we have lapses on actually inserting a lock in the mechanism, I think the location off the ground has deterred unwanted visitors.
For those of us outwitted by a determined raccoon, take solace. While El Mapache has flipped you the proverbial finger, at least it was one very smart finger.
1Herron, P. (1978). Somatotopic organization of mechanosensory projections to SII cerebral neocortex in the raccoon (Procyon lotor). Journal of Comparative Neurology. 181: 717-728.
2Robinson, CJ, Wurster, RD. (1997). Testing Peripheral Somatosensory Neuroprostheses by Recording from Raccoon Cortex. IEEE Engineering in Medicine and Biology Society. 5 (1): 75 – 80.