Wolf

• Female Arabian wolves (C.l. arabs) may weigh as little as 10 kg when mature. This makes this subspecies one of the smallest among wolves.
• Instances of nearly human-like intelligence in wolves have also been observed, for example, when helicopter hunters drove them into a small grove.
• Wolves are strong animals capable of tearing off poorly fastened bars, sheets of iron, and mesh.
• Unlike many other predators, wolves often return to uneaten remains of their prey, especially during lean times of the year.
• Wolves in cold climates are larger than those in warmer regions, according to Bergmann's rule. This is because larger bodies retain heat more effectively.
• Female wolves have one estrus period per year, unlike domestic animals, which have two estrus periods per year. This timing ensures that wolf pups are born during the warm spring season.
• In Siberia, individual wolves may weigh more than 92 kg, exceeding average values.
• Wolves move by placing weight on their toes rather than the entire paw, making them "digitigrade" walkers.
• The common wolf lives in steppes, semi-deserts, tundra, and forest-steppes, preferring open, lightly rugged areas rather than dense forests.
• A wolf’s howl serves for long-distance communication.