Just curious to see how old the average guinea pigs on the board here have lived to be, since I feel like this is a good sample group of pigs getting good care and nutrition. I've read everything from 4 to 8 years as an average lifespan, but am curious as to real-world experience. The two I have now are 5.5 years (Linney) and 4 years next month (Sundae.) It's started to occur to me that Linney is getting up there in age now. 
