Do all sheltie puppies have short fur?

I think so. They are so adorable!!
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Grooming
Shelties have a double coat. The topcoat consists of long, straight, water-repellent hair, which provides protection from cold and the elements. The undercoat is short, furry, and very dense and helps to keep the dog warm. The Sheltie is usually a clean dog and should only need to be brushed once or twice a week (it is helpful to spray-mist with water when brushing). Mats can be commonly found behind the ears, under the elbow on each front leg, and in the fluffy fur on the hind legs (the "skirts").

Although its coat might appear to be a time-consuming task, a once-weekly, but thorough, brushing is all that is needed, though more frequent groomings and trimmings will contribute to a beautiful and tidy coat. Shelties usually shed twice a year, often at spring and fall, and should be groomed more often at those times. A good brushing with an undercoat rake, which removes the dead and loose hair from its coat daily should reduce the amount of hair that is shed. Females will also shed right before or right after giving birth.

It is easiest to teach a dog to tolerate, or even enjoy, grooming if they are shown that it is a pleasurable thing from a young age. Breeders usually teach the dogs to lie on their side, be brushed, and then flip over to the other side. Toenails and hair between the pads need to be trimmed every couple of weeks to ensure traction and to prevent mud and snow from balling up on the feet. Most Shelties learn to love the attention that grooming provides, if the routine is started when the dog is still young.

Show dogs may require more frequent brushing to keep their coats in top condition. Regular brushing encourages undercoat growth, distributes healthful oils produced by the skin, and prevents sores known as "hotspots" which can occur when dead undercoat is allowed to accumulate close to the skin. Show dogs also require trims to certain parts of the coat, including shaping the ears, the topskull, the jawline, paws and topline. There are several published works on the subject, including the book "Sheltie Talk."[9]
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