Where would we be without our pooches and kitties? In a very dismal place, that’s where. Our critters are our friends, companions, walking buddies, and alarm clocks. Sure, there are the gusts of fur that drift through our homes and the occasional chewed earbud cord to vex us, but studies show that having pets can reduce stress levels, provide companionship, and boost your mood. Here are some excellent books by authors who know how wonderful animal friends can be: