Monts de Gueret Animal Park
The wolf pack howls on average for 85 seconds. It is usually started by a single wolf, after which other wolves may join in. The pack leader, the alpha wolf, usually uses a lower-pitched howl and howls more frequently than wolves standing on the lower rungs of the pack's hierarchy. Although some functions of the howling are still unknown by scientists, they believe that wolves may howl to scare off other wolf packs from their territory and to gather their own pack, as wolves possess perfect hearing and their howling can be heard for up to in the forest and in open space. Researchers have found a relationship between the number of times a wolf howls and the strength of their relationship with other pack members. According to Friederike Range, co-director of the University of Vienna's Wolf Science Center, "the strength of the relationship between wolves predicted how many times a wolf howled."
List of Ice Age characters
Steffie is a teenager woolly mammoth who is the alpha girl of the Valley's popular crew. Her friends, Katie and Meghan, are always in agreement with her. She does all that she can to keep any other girls away from Ethan, which is why she dislikes and insults Peaches. She is the sassy leader of the Brat Pack. Although she is rude and unkind, she can be sweet when she is with Ethan; when Louis and Peaches show their bravery fighting Gutt, she begins to warm up to them. 
Katie and Meghan are teenage woolly mammoths who are two of the first-rate members of the Valley's popular crew. Katie and Meghan are always in agreement with what Steffie says, and they do everything that Steffie does or asks. To Steffie, Katie is likely more important than Meghan, as they sometimes leave Meghan alone. Katie is known as the gossip girl of the Brat Pack.