The Rough Collie’s smile says it all: a dog with beauty, personality and intelligence. 
For the ACK, the popular Collie has two varieties, the Rough Collie (long haired) and the Smooth Collie (short hair), but for the FCI and the KC they are two different breeds, with a standard for each. Both are perfectly balanced animals, with harmonious proportions, with no exaggerations. The head is triangular, with a soft and clean profile; never too pointy or too full. The correct jaw is essential to the Collie expression, and the bite should be in scissors. The muzzle and width of the back part of the skull should compliment to create the typical Collie look. The ears can barely be smaller, and their carriage should be correct, with the tip folded forward naturally, three quarters remaining erect. The forehead is chiseled around the eyes, almond and medium sized, oblique insertion; never full or round. The neck, firm and vigorous, looks like a large necklace in the long hair. The body is somewhat longer than tall, and should be firm, not greasy or fragile. The external hair in the Rough Collie should be straight and rough, never soft, open or curly; the external hair in the Smooth should be short, hard and thick; the undercoat in both is soft and abundant. Four colors are acknowledged: red and white, tricolor, merle blue and completely white. The FCI does not accept the white, admits two colors: cibeline and white, tricolor and merle blue. Only merle colored specimens can have an eye in each color. The male stands between 60 and 66 cm and weighs between 30 and 37 kg; the females are 5 cm less and weigh 5 kg less. For the FCI, the males, the height to the withers is between 56 and 61 cm, and the females 5 cm less.
WHO IS IT RIGHT FOR             
The Smooth Collie (short haired) is not as popular as the Rough Collie, although it has all of its brother’s virtues, except for the abundant coat and the care it requires. 
It is not a surprise that the Rough Collie and the Smooth Collie are children dogs! They are dynamic and sweet dogs, which always know how to be in tune with the owner’s mood. The most important thing for the new Rough Collie owner is to make sure they don’t bark as puppies. Many become incurable barkers, which is a shame, since the dog is useless as a guardian.
The Collies usually have large litters, and the litter size can affect the puppy’s weight, which is between 170 and 340 g. The puppy grows quickly, the males even more. The weight after eight weeks can be no less than 10 kg. The newly arrived puppy will have to eat twice or three times per day; the young specimen twice a day; and the adult, one meal, but distributed in two portions, always high quality. The buyer should select a puppy with a sweet personality, extroverted and affectionate, and educate it kindly, using positive reinforcement, never physically abuse or yell. The coat color may darken with change. The ears might need special attention to keep erect during dentition period.
The Rough Collie puppy should be well fed and display substance, without being fat. The puppy grows quickly, although there is a lot of variation from one litter to the other. 
Practically reestablished from the “Lassie” period, the popular movie character that provoked excess breeding, the Collie enjoys pretty good health. There is still dwarfism in some litters: normal puppies at birth, which grow slowly and never reach an adult size. Further, health problems are frequent in these specimens. The merle blue are susceptible to deafness. Skin problems are the most common, including demodicosis, nasal pyodermia and solar nasal dermatitis (Collie nose). Some Collie can suffer from eye problems (Collie eye and progressive ritual atrophy). The demodicosis under a year can suffer from elbow dysplasia, for which it is essential to perform X – rays. Some breeding line carry Hemophilia A, groin hernia and epilepsy incidence. Make sure your veterinarian is aware that some Collies don’t tolerate ivermectin, broadly used in philariasis prevention. Keep your dog tick free, since they can cause adverse reactions in your Collie. Your veterinarian should rule out the Ectasia syndrome (Collie eye) during the first visit. A Collie may lose its teeth early, if not cared for properly and gnawing is not stimulated to keep them healthy. The breed is more susceptible than others to gum hyperplasia, for which it is convenient to brush the teeth frequently, and male sure your dog can bite Nylabone®. The Collie can live 10 to 12 years. Veterinarians inform cases of amyloidosis, osteosarcoma, and patent arteriosis through the lung.
It is known that the Rough Collie reacts poorly to ivermectina (preventive medication). Talk about it with your veterinarian and breeder
After eight weeks, the Collie puppy, be it Rough or Smooth, can weigh up to 10 kg.