Poderia ser o The Carpet People de Terry Pratchett? Os protagonistas não são realmente pulgas, mas são do tamanho de pulgas; eles não vivem em um animal de estimação, mas em um tapete; mas o conceito parece similar, com o "ser sugado" por um vácuo (ou algo semelhante) sendo um ponto central da trama.
The story follows the journey of a tribe called the Munrungs, across a world known as the Carpet. ... The Munrungs cross the carpet to find a new home after their village is destroyed by the powerful and mysterious natural force Fray. The origins of Fray are never explained in the book, but it is described in a way to suggest sweeping or vacuuming (some reviewers have suggested it represents human footfalls), and is referred to as sweeping on the back cover of the current UK edition...