Bouviers des Flandres can typically get along well with cats and other small pets if properly socialized from a young age. Their herding instincts might cause them to chase smaller animals initially, but with consistent training and supervision, they often learn to coexist peacefully. It's important to introduce them gradually and in a controlled environment, reinforcing positive behavior with treats and praise. Monitoring their interactions and providing separate spaces for cats and small pets can help ensure a harmonious household. Early socialization and training are key to fostering good relationships with other pets.