I was intrigued by your comment, and did five minutes research, Apparently you're half right - pretty much every mammal will sweat to some degree (its almost a

I was intrigued by your comment, and did five minutes research, Apparently you're half right - pretty much every mammal will sweat to some degree (its almost a defining feature of mammals - mammary glands are modified sweat glands) - but only a limited number of mammals sweat heavily, horses being another notable example.