Tell him ASAP. When I was eight my parents had my cat put to sleep, but my
mother told me for a week that she had runaway while trying to decide what to
tell me. I felt horrible, as if I had done something wrong, and I would go out
looking for her. Whens he finally did tell me the truth I felt even worse.
You should tell him honestly what happened. Explain that guinea pigs don't live
as long as humans, and that it was just her time to go. Having a funeral for
her will also help.
>> Stay informed about: our guinea pig has died... how to tell my son?