" When pigs live in the wild-or even wild boars-these animals live in groups. They need to communicate with their conspecifics to be able to live."

“当猪生活，甚至还是猪时，这些动物会群居。它需要与同类交流才能生存下去。”

Like in almost every other species,   those individuals living in colder climates tend to be larger than  their warmer weather conspecifics.

与几乎所有其他物种一样，那些生活寒冷气候中的个体往往比气候温暖的同种个体更大。