Moonie, the Chihuahua who played Bruiser Woods in "Legally Blonde," has died at the age of 18. His co-star, Reese Witherspoon, shared the news on her Instagram page.

“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,” she shared with an image of them together as Elle and Bruiser.

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Witherspoon tagged animal trainer Sue Chip, who adopted Moonie before he landed the role in “Legally Blonde.” She also shared a sweet image of Witherspoon and Moonie together when she received her star on the Walk of Fame.

“On this day – a day of 'throwbacks' I give you one of the greatest little dogs…'Moonie' of Legally Blonde fame. I’m sad to say that this morning in Los Angeles he left us. He was a whopping 18 years old. I remember the day I brought him home as a puppy.”