Protective clothing and apparel for pets and animals, and method of using same, structured as a shirt and/or hat made of an ultraviolet protective rash guard material with at least on portion having cooling crystals integrated therein. In a first embodiment the clothing is directed to a pet shirt constructed having a top portion, bottom portion, and side portions arranged to form a generally tubular member having an opened torso end, two leg members, and a collar member. In a second embodiment the clothing is directed to a pet hat constructed having a top portion, side portions and a front portion having a visor member attached thereto, the side portions having a lower rim. Two ear members and securement means are integrated within the lower rim of the side portions. At least a portion of the shirt/hat comprises ultraviolet properties. Additionally, at least a portion of the shirt/hat comprises a cooling zone formed of a plurality of cooling crystals. Owing to the ultraviolet material and cooling crystals the pet clothing shields pets/dogs from harmful ultraviolet rays while keeping them cool and comfortable and mitigating heat exhaustion.