My daughter Emily had to put her beloved cat, Sapphire down last night. She had kidney disease. Emmy got Sapphire at 6 months, she was a rescue, they had 10 happy years. Our vet believes, she had a predisposition to kidney problems, and it came on suddenly, so hard on my daughter! The vet was wonderful! And we knew the only choice was to end her suffering, kidney disease cannot be reversed, she was a funny, loving cat who adored my daughter. We shall miss her.