Demi Lovato axes TV appearance as she mourns dog's death

Pop star Demi Lovato has canceled a promotional TV appearance on Thursday (30Jul15) as she continues to mourn the death of her beloved dog.

The Heart Attack hitmaker shared her heartbreak with fans on Twitter.com on Tuesday (28Jul15), when she revealed her pet pooch, Buddy, had been "taken from us way too soon in a tragic accident".

She stopped short of sharing details about his demise, but reports suggest the dog was fatally attacked by a coyote in the backyard of Lovato's Los Angeles home on Sunday (26Jul15).

According to TMZ.com, the singer/actress was the one who reportedly found Buddy's lifeless body, and she is so devastated by the incident, she has scrapped plans to appear on Good Morning America on Thursday.

Buddy had been an early Christmas gift for Lovato from her actor boyfriend Wilmer Valderrama last year (14).