Rooster is a confident and brave Welsh Sheepdog introduced in 'The Secret Life of Pets 2.' He plays a crucial role in helping Max, the protagonist dog, overcome his fears and insecurities during a visit to the countryside. Rooster's tough and no-nonsense attitude initially intimidates Max, but he eventually becomes a mentor figure, guiding Max through various challenges. His character is designed to embody wisdom and courage, serving as a pivotal influence in Max's journey of personal growth and self-discovery.