How long do cavies live?

My dog "Bobby doodle Albert Arthur" a Cavooodle died at the age of 4 and many of other friends dogs all have Cavoodles had the same problem. Cavoodles and poodle's are the worst combination and they can live up to 3 and 1/2 years WARNING this is a true story in love of " Bobby doodle Albert Athur" best wishes in heaven. Please think of him and pray this destroyed my heart when he died. This is a true story please don't think this is fake.Thankyou