Osbourne, 26, first alerted fans that her Pomeranian, Noodles, was ill earlier in the week.
“My poor baby girl Noodles is sick,” she wrote Tuesday. “She had a seizure and they don’t know why. I’m taking her to see a specialist two hours away for a brain scan.”
About 24-hours later, Osbourne announced that Noodles was going to be put down. “Noodles is not going to make it,” she writes. “She was born with a brain defect, and I have to put her to sleep today I’m devastated. I just can’t believe it.”
Noodles was only adopted in March, 2011.
Osbourne later tweeted one of our favorite Will Rogers quotes that we think of when anyone loses a dog… “If there are no dogs in Heaven, then when I die I want to go where they went.”