It is a mammal living in North America, belonging to the family of sheep. Known for its prominent horns and strong physique. Female bighorn sheep are usually smaller in size than males, but still strong and powerful. Their fur color changes with the seasons, ranging from light brown in summer to grayish white in winter. It mainly inhabits high and subalpine areas and feeds on grass, leaves, and bark. It is a social animal that usually forms larger groups in winter. The breeding season is in autumn, and each litter usually gives birth to one offspring. Despite their small size, they have almost no natural enemies in the wild, and their main threats come from human activities and climate change.

It is a mammal living in North America, belonging to the family of sheep. Known for its prominent horns and strong physique. Female bighorn sheep are usually smaller in size than males, but still strong and powerful. Their fur color changes with the seasons, ranging from light brown in summer to grayish white in winter. It mainly inhabits high and subalpine areas and feeds on grass, leaves, and bark. It is a social animal that usually forms larger groups in winter. The breeding season is in autumn, and each litter usually gives birth to one offspring. Despite their small size, they have almost no natural enemies in the wild, and their main threats come from human activities and climate change.

It is a venomous snake species living in North America, belonging to the Viperidae family. The most prominent feature is a string of keratin rings at the end of the tail, which make a sound when shaken, hence the name "rattlesnake". The body is usually larger, with a sturdy body, a triangular head, and vertical pupils in the eyes. Mainly by sensing heat sources to locate prey, preying on small mammals, birds, and lizards. Venom contains various neurotoxins and blood toxins, which can quickly incapacitate prey. Despite their strong toxicity, rattlesnakes generally do not attack humans without reason and only engage in defensive attacks when threatened.

It is a mammal living in North America, belonging to the family of sheep. Known for its prominent horns and strong physique. Female bighorn sheep are usually smaller in size than males, but still strong and powerful. Their fur color changes with the seasons, ranging from light brown in summer to grayish white in winter. It mainly inhabits high and subalpine areas and feeds on grass, leaves, and bark. It is a social animal that usually forms larger groups in winter. The breeding season is in autumn, and each litter usually gives birth to one offspring. Despite their small size, they have almost no natural enemies in the wild, and their main threats come from human activities and climate change.