What is the life expectancy of a great dane?

7-10 years is the expectancy, although I have heard of some that have lived longer. I have a Great Dane right now, she is 3.5 her name is Daisy. She has Wobbler's and might make it to 5, maybe not even that. Along with Wobbler's, bloat is an extremely serious condition, as well as osteosarcomas and hip dysplasia.