This small dog breed is surprisingly aggressive, bold, and stubborn, which makes it more prone to aggression toward other dogs and people than some larger, more feared breeds.
Despite weighing just 6 pounds, Chihuahuas' attitude mirrors much larger dogs, fiercely bonding and protecting their owners.
Cocker Spaniels possess the most heart-melting “puppy dog eyes", yet they exhibit unpredictable bursts of aggression followed by a quick return to their typically calm and mopey demeanour.
Pekingese are not friendly with strangers or children. Their sensitive nature is linked to their royal roots—they were bred in the Chinese Imperial court and treated like pampered royalty for centuries.
Originally bred for scent tracking and hunting, Beagles have a strong instinct to follow their nose. They sometimes become so fixated on a scent that they ignore commands and might react aggressively, potentially biting.
Jack Russell Terriers were originally bred to hunt foxes and rats. A bored Jack Russell Terrier can become anxious and potentially aggressive without enough activity or proper socialisation.
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