Reese Witherspoon Dog: Actress Posts Touching Tribute To 'Legally Blonde' Pup Bruiser [VIDEO]

It's a sad day for dog lovers everywhere. Fifteen years after he made his debut in Legally Blonde, Elle Woods' little Chihuahua pup has moved on to the great dog run in the sky.

Known as Moonie, or Bruiser to those who caught his cute mug on the big screen, the little canine star passed away Thursday at age 18. Reese Witherspoon (Elle) and Moonie's Legally Blond trainer Sue Chip took to Instagram to bid a fond farewell to their four-legged pal.

 With a sad heart, I have to let all the #LegallyBlonde fans know that Bruiser Woods (also known as Moonie) passed away yesterday. He was a sweet little Chihuahua who was very loved. I will never forget all the days we spent together ... I'm sure his tail is wagging in the sky. Sending love to his trainer, the wonderful @tailsticks #RIPBruiser