The Chow-Chow is a sturdily built dog, square in profile, with a broad skull and small, triangular, erect ears with rounded tips. The breed is known for a very dense double coat that is either smooth or rough. The fur is particularly thick in the neck area, giving it a distinctive ruff or mane appearance. Aggression when it does appear is often towards other dogs of the same gender, especially Chows. Due to their strong hunting instincts, it is recommended that these dogs stay fenced, leashed, and away from cats and small dogs. This is why it is crucial that they are socialized early and consistently to act appropriately with strangers. Both create a thick woolly layer, as it gets closer to the skin. They should be brushed four times a week; however shedding seasons may require daily grooming.