Much like their many of their human counterparts, pets do not always relish winter. Animals can experience arthritis pain or fatigue when the cold sets in. Shorter periods of daylight also may make them less active and likely to sleep for longer periods of time. In an effort to stay warm, some pets get creative. Cats can unintentionally put themselves in danger just to chase a chill away. The American Animal Hospital Association says cats will curl up against almost anything, including car engines, to stay warm. Cats caught in moving engine parts can be seriously hurt or killed. Before you turn your engine on, check beneath the car or make a lot of noise by honking the horn or rapping on the hood. Also, if you have exposed radiators in a home or apartment, construct a cover to prevent cats and dogs from climbing on the exposed coils. The hot water pumping through radiators can cause burns. Cats and dogs also may get too close to fireplaces, so use a protective screen to keep them away from hot embers. Pets also can knock over portable heaters in an attempt to get warm. Look for models that automatically shut off if they fall over to reduce your risk of fire.