A heat sink for a pet includes a carrier, at least one heat pipe body and a cover. The carrier has an upwardly facing accommodating space, and the carrier defines at least one accommodating groove extending from a bottom surface of the accommodating space to a top surface of the cradle. The at least one heat conducting tube body is correspondingly received in the at least one receiving groove, and one end of the heat conducting tube body is exposed on the bottom surface of the bearing seat, and the other end of the heat conducting tube body is exposed on the top surface of the bearing seat. The cover body is disposed on the bearing seat, and the bottom surface of the cover body abuts against the other end of the heat pipe body； thereby, when the receiving space of the bearing seat accommodates a low temperature object, the heat pipe body can conduct the heat energy of the cover body To low temperature objects.一種寵物用散熱坐墊包括一承載座、至少一導熱管體及一蓋體。承載座具有一朝上的容置空間，承載座形成至少一容置溝槽由容置空間的底面延伸至承載座的頂面。至少一導熱管體對應地容納於至少一容置溝槽，導熱管體的一端外露於承載座的底面，所述導熱管體的另一端外露於承載座的頂面。所述蓋體蓋設於承載座，所述蓋體的底面抵接於導熱管體的另一端；藉此，當承載座的容置空間容納一低溫物件，導熱管體能將蓋體的熱能傳導至低溫物件。
