Bull Terriers can exhibit strong prey drives and territorial behaviors, which may affect their interactions with other dogs, cats, and small animals. They often do best as the only pet, especially if not socialized from a young age. However, with proper training and early socialization, Bull Terriers can learn to coexist peacefully with other pets. It’s crucial to introduce them gradually and under controlled conditions to other animals. Monitoring their behavior closely in these interactions is essential to ensure harmony and prevent potential aggression.