How do you tell a stray from a cat that's out 'cattin' around?' Every night I see cats out in the freezing cold. Some of these are strays,others have homes but are allowed out every night,and some go from house to house,where people leave food and water.How do you tell them apart? If I see a kitten nose-deep in the snow,and I can catch the li'l sucker,he's as good as warm and fed! But WHEN should I intervene?