Abstract: A method of dispensing liquid from a dispenser onto an animal. The method includes placing a tip of the dispenser on or near the skin of the animal and depressing a plunger which is movably disposed in a body of the dispenser. Depressing the plunger causes a membrane in the body to be pierced such that an opening is formed in the membrane. At least some of the liquid is dispensed through an opening of the dispenser onto the skin of the animal. In another embodiment, a dispenser is provided for dispensing liquid onto the skin of an animal. The dispenser can include a cap and a replaceable cartridge.