A liquid dispenser to supply liquid to an animal, comprising: a tank having an upper opening; a pump provided in the tank ; a pipe configured to transfer liquid discharged from the pump to a plate provided above the tank and having a hole adapted to communicate with the pipe ; and a liquid guide provided below the plate and having a discharge hole adapted so that liquid dropped from the plate enters the tank through the discharge hole , wherein the liquid guide and the plate cover the upper opening of the tank, and the discharge hole is provided below the upper opening of the tank , and wherein liquid supplied through the hole of the plate flows over an upper surface of the plate and falls off an edge of the plate , wherein the edge of the plate is curved, wherein the tank further includes: a wall that defines a side of the tank and that supports an outer guide wall of the liquid guide ; a bottom plate defining a bottom of a space in which liquid is stored; and a container support on which the bottom plate is mounted, wherein the wall of the tank extends upward from the container support and has a radius that decreases from a lower end toward an upper end, wherein the wall of the tank includes a main wall extending from the container support and an upper wall positioned on an upper end of the main wall , wherein an inner tank wall is coupled to the upper wall and has a radius that increases from a lower end to an upper end, and wherein the outer guide wall has an outer inclined surface supported by the inner tank wall . a tank having an upper opening; a pump provided in the tank ; a pipe configured to transfer liquid discharged from the pump to a plate provided above the tank and having a hole adapted to communicate with the pipe ; and a liquid guide provided below the plate and having a discharge hole adapted so that liquid dropped from the plate enters the tank through the discharge hole , wherein the liquid guide and the plate cover the upper opening of the tank, and the discharge hole is provided below the upper opening of the tank , and wherein liquid supplied through the hole of the plate flows over an upper surface of the plate and falls off an edge of the plate , wherein the edge of the plate is curved, wherein the tank further includes: a wall that defines a side of the tank and that supports an outer guide wall of the liquid guide ; a bottom plate defining a bottom of a space in which liquid is stored; and a container support on which the bottom plate is mounted, wherein the wall of the tank extends upward from the container support and has a radius that decreases from a lower end toward an upper end, wherein the wall of the tank includes a main wall extending from the container support and an upper wall positioned on an upper end of the main wall , wherein an inner tank wall is coupled to the upper wall and has a radius that increases from a lower end to an upper end, and wherein the outer guide wall has an outer inclined surface supported by the inner tank wall . a wall that defines a side of the tank and that supports an outer guide wall of the liquid guide ; a bottom plate defining a bottom of a space in which liquid is stored; and a container support on which the bottom plate is mounted, wherein the wall of the tank extends upward from the container support and has a radius that decreases from a lower end toward an upper end, wherein the wall of the tank includes a main wall extending from the container support and an upper wall positioned on an upper end of the main wall , wherein an inner tank wall is coupled to the upper wall and has a radius that increases from a lower end to an upper end, and wherein the outer guide wall has an outer inclined surface supported by the inner tank wall . <EOS>