Today has been a day of discovery, I learnt a little about rats. These little critters seem to provoke the most remarkable terror and fear in people. Understandably this probably dates back to a time when we died of bubonic plague, or for those unfamiliar, think of a coronavirus that wiped people out, gave you boils and was spread by rats. However now the chances of catching anything from a rat are rare and you’ve got more chance of being eaten by your cat. Saying that I do remember as a fifteen years old opening the bin in the dark and one jumping out at me, I’m not ashamed to admit I screamed and ran away. Doesn’t make it any less irrational though.
It appears though rats are pretty cool once you get over yourself and get to know them. They laugh when tickled which comes out as a type of ultrasonic chirp. Apparently they bond with their ticklers and search them out to continue playing with, they’ve even taught them how to play hide and seek. They enjoy themselves. They’re capable of reliving past memories and planning routes for future use. They reciprocally trade goods with each other and have a system of favours in which the favour need not necessarily be repaid in the same currency. They respond with something close to regret when they make the wrong choice, have been taught how to use tools to access out of reach food and have been able to outperform humans in some learning tasks.
Remarkably they have shown signs of empathy too. They refused to press levers to access food if it resulted in another rat getting an electric shock, as well as walk down certain tunnels in a maze if the result was an electric shock to another, this became extra prevalent had the mouse experienced the shock themselves already and knew what was coming for the other rat. Similarly if they themselves have experienced being drenched in water they’re more likely to rescue another rat from drowning and will rescue a trapped rat when they themselves can escape to safety. Even humans don’t do that, maybe we need to readdress this word humane we seem to have elevated onto a pedestal. Rats seem to care about each other more than we do.
In a time long past now, we as a species used to commit the most heinous of experiments on chimpanzees until we realised they are incredibly similar to us. There are now laws protecting them but there are still none protecting the rat. They have decided they didn’t learn enough from experimenting on chimpanzees and have now replicated many psychological experiments on rats too. They have raised some rats away from their mothers and in social isolation, the result being a shrinkage in the area of the brain responsible for emotion and affiliation. They managed to create mentally ill, traumatised and emotionally suffering rats. While we admit they’re close enough for us to use as models for human psychopathologies, the accepted wisdom is that they’re far enough away for us to relate to them and empathise, unlike chimpanzees and other primates who remind us of humans.
The rat genome has been fully sequenced for fifteen years now which has led to major advances in our understanding of how genomes work. We have made breakthroughs in our understanding of cardiovascular disease and obesity, and because their social nature mimics our own, behavioural and psychological studies too. Researching on rats clearly has benefits and many people would use this as justification for the continuation of such work. We understand the moral argument otherwise we would just do this testing on humans, we don’t even use chimpanzees anymore. We may have learnt to fear rats and I’m in no rush to cuddle one but they’ve been shown to be sentient beings with rich emotional lives. If we are such an advanced species why do we continue to suppress our own emotional bond with other sentient beings. Maybe that’s what advanced is, the ability to switch it on and off when it suits us. Perhaps it’s time for a new and updated definition of humane.
Observations and Misunderstandings 