Demi Lovato posted in her Instagram account a cute photo of her together with a new furry friend. Wilmer Valderama's girlfriend also slammed a Twitter hater after commenting that she is "fatty."

The 22-year-old singer and actress Demi Lovato revealed in her Instragam her newest adorable puppy, Buddy, as she posed beside him on what seemed like a couch.

Demi Lovato's puppy's debut in her Instagram and Twitter accounts was also followed by the singer's revelation that she made an account for Buddy, The Daily Mail said in a report.

She said, "I love you Buddy!! Welcome to Twitter & Instagram."

Buddy's account, whose handle is @DemisBuddy, has now reached over 15, 000 followers just a day after it joined the social media site.

The singer also uploaded a few photos of Buddy, who gamely posed in different locations of Demi Lovato's house. One photo even showed Buddy posing comfortably in front of a Christmas tree.

Meanwhile, the "Really Don't Care" singer slammed a Twitter hater after calling her "fatty."

A Twitter user commented, "@alekjandro: shut up fatty dont choke on ur mcdonalds!" to which the "Give Your Heart A Break singer" responded, ""But...Big Macs..."

Her comment was followed by an array of emojis.

Demi Lovato also said in her tweet, "Really sucks how expectant people can be these days.. Not need to cause a scene or be pushy. *cue the hate but idgaf*"

It can be recalled that the former Disney star has struggled with weight issues over the years, The Hollywood Life report said.

Recently, Demi Lovato admitted that she almost went back to rehab again but her boyfriend Wilmer Valderama saved her from her struggles.

Reports said that the 34-year-old actor made her snap back to reality. The actor also kept the singer reminded that she should keep on getting healthy despite her bad relationship with food.