野外的肉食动物大多不能过上衣食无忧的生活,它们无法保证自己顿顿饱餐,而且捕猎时需要消耗的能量也很大,所以,这些动物不会发胖。而家猪在人类的照料下,终日无所事事,食物充足,营养丰富,况且猪圈里的空间有限,导致猪的活动量不大。这样,猪摄入营养多,身体消耗少,体内脂肪便逐渐积累起来了。【知识布丁】Q:猪为什么爱在泥巴里打滚? Wild carnivores are mostly unable to live happily ever after. They can not guarantee themselves enough to eat, and they consume a lot of energy to hunt, so these animals will not get fat. Domestic pigs under human care, all day doing nothing, adequate food, nutrient-rich, Moreover, there is limited space in the pigsty, resulting in little activity of pigs. In this way, pigs eat more nutrition, less physical consumption, body fat will gradually accumulate. Knowledge Pudding Q: Why do pigs love rolling in the mud?