Data shows decline in migratory fish populations 数据显示洄游鱼类种群数量下降

大西洋鲑和尼泊尔巨魾均属于被联合国列为全球优先保护对象的 30 种旗舰鱼类。 Population data of more than 15,000 species of freshwater migratory fish, which make ...

Mixed-breed dogs more badly behaved, vets warn 兽医警告：杂交犬更易出现不良行为

Deaf sheepdog learns how to herd using 'sign language' 失聪牧羊犬通过识别手势指令放羊 Episode 210419 / 19 Apr 2021 What has made it possible ...