Do short-haired dogs need something to keep them warmer in cold weather?

I have a miniature dachshund, and my husband says that my dog will need some sort of sweater when the weather gets colder because his natural coat is not enough to keep him warm. Is this true? He is an indoor dog, and he only goes outside when we go for a walk or when he needs to relieve himself. Thanks for your... show more I have a miniature dachshund, and my husband says that my dog will need some sort of sweater when the weather gets colder because his natural coat is not enough to keep him warm. Is this true? He is an indoor dog, and he only goes outside when we go for a walk or when he needs to relieve himself. Thanks for your answers.
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