I `ve found an interesting reserch about crayfish. Who could imagine how sentient these animals are!
It was thought that only humans and "intelligent" animals could experience anxiety - but the recent research showed that crayfish may experience a form of this emotion too. When the crustaceans were exposed to a stressful situation - an unpleasant electric field - they subsequently behaved far more cautiously, staying hidden in the darker parts of their tank. But when the stressed crayfish were given an anti-anxiety drug, they stopped being so wary and moved into light, more exposed areas. The fact that these animals may get anxious adds to a number of studies that suggest crustaceans also feel pain. Scientists say it suggests the welfare should be improved for these creatures, which are not currently considered intelligent being by the food industry.
It was thought that only humans and "intelligent" animals could experience anxiety - but the recent research showed that crayfish may experience a form of this emotion too. When the crustaceans were exposed to a stressful situation - an unpleasant electric field - they subsequently behaved far more cautiously, staying hidden in the darker parts of their tank. But when the stressed crayfish were given an anti-anxiety drug, they stopped being so wary and moved into light, more exposed areas. The fact that these animals may get anxious adds to a number of studies that suggest crustaceans also feel pain. Scientists say it suggests the welfare should be improved for these creatures, which are not currently considered intelligent being by the food industry.
