A liquid dispenser to supply liquid to an animal, comprising: a container configured to store liquid and having an upper opening; a pump having an inlet to suction liquid stored in the container and an outlet to discharge the liquid; a lid (300 and 400) seated on the container to cover the upper opening and having a hole through which liquid discharged from the pump flows; and a base to support the container, characterized in that the base includes: a fan having an intake and an outtake, a suction grill through which ambient air is suctioned via the intake of the fan, a plurality of exhaust vents through which air from the outtake of the fan is discharged, and a fan housing to which the fan is mounted, the fan housing having at least one inclined surface which is inclined outward from a top end to a bottom end, the bottom end being closer to the exhaust vents than the top end, wherein a heat sink is placed on the fan housing so as to have a vertical position corresponding to a vertical position of the exhaust vents provided in the base, the heat sink including a heat dissipation plate and a plurality of radiating fins which is provided on the fan housing, wherein ends of the radiating fins are aligned with the exhaust vents of the base, wherein the liquid dispenser further comprises a Peltier device mounted on the heat dissipation plate of the heat sink, a metal plate and an opening formed in a bottom (221, 223) of the container, wherein the metal plate is provided on top of the Peltier device and is exposed through the opening of the container. a container configured to store liquid and having an upper opening; a pump having an inlet to suction liquid stored in the container and an outlet to discharge the liquid; a lid (300 and 400) seated on the container to cover the upper opening and having a hole through which liquid discharged from the pump flows; and a base to support the container, characterized in that the base includes: a fan having an intake and an outtake, a suction grill through which ambient air is suctioned via the intake of the fan, a plurality of exhaust vents through which air from the outtake of the fan is discharged, and a fan housing to which the fan is mounted, the fan housing having at least one inclined surface which is inclined outward from a top end to a bottom end, the bottom end being closer to the exhaust vents than the top end, a fan having an intake and an outtake, a suction grill through which ambient air is suctioned via the intake of the fan, a plurality of exhaust vents through which air from the outtake of the fan is discharged, and a fan housing to which the fan is mounted, the fan housing having at least one inclined surface which is inclined outward from a top end to a bottom end, the bottom end being closer to the exhaust vents than the top end, wherein a heat sink is placed on the fan housing so as to have a vertical position corresponding to a vertical position of the exhaust vents provided in the base, the heat sink including a heat dissipation plate and a plurality of radiating fins which is provided on the fan housing, wherein ends of the radiating fins are aligned with the exhaust vents of the base, wherein the liquid dispenser further comprises a Peltier device mounted on the heat dissipation plate of the heat sink, a metal plate and an opening formed in a bottom (221, 223) of the container, wherein the metal plate is provided on top of the Peltier device and is exposed through the opening of the container.