Meu porquinho-da-índia morreu hoje.

Francisco was born a week Ago, along with Sammy. My Guinea Pigs live on a plataform with wooden house, about 1 meter above The flor. They both fall almost twice a day, but they always seemed Fine. Today, Francisco was round dead on The flor(Without blood or injuries). We think It might haver been a sudden death or semething like that.

Can anyone help me understand what might haver caused his death And o can prevent this from happening again?