United Kingdom, June 17 -- Ariana Grande has praised her pet pooch as the "greatest living creation" on his 13th birthday.

The 32-year-old pop megastar took to social media to gush over her four-legged friend Toulouse, who she described as the "love of my life" and her "absolutely perfect son".

She shared a picture of her canine companion on Instagram and wrote: "happy, happiest thirteenth birthday to my absolutely perfect son and the loml, the greatest living creation on this big, green earth, toulouse...i love you every second of every day forever !!!!!!!!!!!!! WOW. (sic)"

Ariana followed that up with several other pooch posts, including sharing a snap of the Beagle-Chihuahua mix digging in the dirt.

She captioned the picture: "Perf...