Here are the facts:
Dolly was born in Edinburgh Scotland in 1996, cloned from a Dorset sheep as part of a research project at the Roslin Institute.
Dolly died from a respiratory disease contracted by many sheep in the area. She was housed in a building with a concrete floor, which caused a damp environment. Dolly was 6 years old when she was euthanized due to a lung infection. By that time she had given birth to 6 lambs conceived by natural breeding.
“Sheep can live to 11 or 12 years of age, and lung infections are common in older sheep, particularly those housed indoors. There is no evidence that cloning was a factor in Dolly contracting the disease.“