It’s been said that the lifespan of a Bichon is around 15 years, but that is definitely not true. Most dogs live anywhere from 7 to 11 years, with some living as long as 14 years.
How Long Do Bichons Live
Bichon is a small dog with a fluffy coat. They are popular pets in France and the United States. Bichons are known for being affectionate, playful, and loyal. They are very cute dogs that are good companions.
Their average life span is 10 to 15 years.
FAQ

Why do bichons live so long?
Because they are small. According to In Dr. Urfer’s study, small dogs live longer.
How long do bichon frise live?
10 to 14 years.
What percentage of dogs live to 16?
About 8 percent.
Can a bichon frise live 20 years?
Yes. The oldest Bichon Frise lived 21 years according to the UK Kennel Club survey 2004.
At what age do bichon frise stop growing?
At about 10 to 12 months.
What were bichon frise bred for?
To be a friendly dog.
Is 15 old for a bichon?
Yes. You should take proper care of your dog.
Summary
Bichons are smart dogs who can be trained to do almost anything. They love attention and can be very friendly. They are great companions. Bichons are smart, affectionate, and loyal. They are also extremely cute. They can live up to 21 years and their average lifespan is around 11 to 14 years.