Often described as feisty and territorial, Chihuahuas can be prone to excessive barking and sometimes aggressive behavior if not properly socialized.
These little dogs have high energy levels and can be difficult to manage without constant stimulation, making them seem troublesome for first-time dog owners.
While adorable, Dachshunds are known to be stubborn and independent, which can lead to challenging behavior in training.
Known for being bold and protective, Miniature Schnauzers can sometimes be aggressive towards strangers and other animals, requiring careful training and socialization.
Although small and fluffy, Pomeranians can be loud, stubborn, and sometimes difficult to handle due to their strong personalities.
Yorkshire Terriers can be high-strung and sometimes exhibit "big dog syndrome," thinking they're tougher than they really are.
Shih Tzus can be a challenge to potty-train and may become overly attached to their owners, exhibiting separation anxiety if not managed properly.