Esta seria a história "Deserção", que se tornou parte do romance City de Clifford D. Simak. Foi publicado pela primeira vez na edição de novembro de 1944 da Astounding Science Fiction . Tem sido publicado várias vezes desde então.
De Wikipedia link :
Simak's version of Jupiter is a cold, windswept, and corrosive hell where only advanced technology allows the station to exist at all. A scientist is accompanied by Towser, his tired and flea-bitten old dog. But there is a problem. Men permanently transformed to survive unaided on Jupiter's surface leave the station to gather data and inexplicably fail to return. Finally, the scientist transforms himself and his canine companion into the seal-like beings that can survive the surface. They leave the station in their new form and experience Jupiter as a paradise. Towser's fleas and irritations are gone and he is able to talk telepathically to his former master. Like the previously transformed station personnel, the scientist decides never to return.