"My dog, Pearl, passed away today [Monday]. She was there on my first day of kindergarten and my first day of college. I'll love her forever."

Miranda wanted to share the sad news with her fans, who quickly sent her tons of messages of love and support to help her.

"Thanks so much for all the nice messages! I'm so sorry for all the other people who have lost their pets. #greatmemoriesliveonforever :)"

Miranda grew up with Pearl, who was just a few months old when her family got her. Miranda was only 5. They grew up together for 14 years, so Miranda probably has lots of happy memories with her dog. R.I.P., Pearl!

Source: @MirandaCosgrove