NN.When Bella, the 7-year-old German Shepherd, met her new diminutive younger sister, a 4-year-old Chihuahua, she immediately embraced her with affection, treating her like her own precious “baby,” thus forging a heartwarming bond from the very beginning.

Bella stayed by Tinkerbell’s side as the little puppy grew. No matter where Tinkerbell went, Bella was sure to follow.

“She is very protective of Tinkerbell,” Boswell said. “She watches over her all the time. While she eats, drinks water or goes to the bathroom.”

As Tinkerbell matured, her personality blossomed — and it turned out to be surprisingly similar to Bella’s, especially when it came to other dogs.

“Around other dogs, they both bark and act slightly aggressive when in close contact,” Boswell said. “But they have never fought with or acted aggressively toward each other.”

Instead of feeling intimidated by one another, Tinkerbell and Bella find comfort in being together. So much so that they can typically be found attached at the hip.

“Tinkerbell usually just jumps right on Bella’s back, and Bella never minds it,” Boswell said.

Although Bella is much bigger than Tinkerbell, Boswell never has to worry about her accidentally stepping on her sister.

“Bella is extra gentle and careful with Tinkerbell because, even though she thinks she’s a tiny lap dog herself, she knows Tinkerbell is much smaller than her,” Boswell said. “She’s an awesome big sister.”