9. Cavalier King Charles Spaniel

Bred specifically for companionship, the Cavalier King Charles Spaniel is a deeply sensitive soul. They are remarkably attuned to the emotional state of their owners and the general atmosphere of the household. If there is tension, shouting, or constant chaos in the home, a Cavalier will absorb that stress.

This breed requires a calm, stable environment. They respond poorly to harsh reprimands, which will only increase their fearfulness. Positive reinforcement and a gentle, reassuring tone are essential for keeping a Cavalier confident and relaxed.

10. American Staffordshire Terrier

With their muscular build and tough exterior, American Staffordshire Terriers look like they can handle anything. In reality, they are massive softies. AmStaffs are highly sensitive dogs that bond fiercely to their families. They are incredibly prone to separation anxiety and can become deeply distressed when isolated from their pack.

Because of their jaw strength, an anxious AmStaff left alone can do significant damage to a home in an attempt to escape and find you. Crate training—when done positively and patiently so the crate becomes a safe haven—along with vigorous daily exercise, is vital for managing their anxiety.