colour and body type. Most often, they are seen in the merle coat pattern, but can exhibit any combination of colour and coat lengths. The solid red or black Koolie are often mistaken for Kelpies, and some bi-coloured Koolie have been taken for Border Collies by the general public. As all of these breeds share Collie ancestry, they resemble each other. Coat The Koolie coat ranges from short/smooth (like that of the original blue merle Collies from Scotland), short (like a working Kelpie), medium and, not common, long (like the show Border Collie). Koolies are typically slightly longer than tall. The majority of owners prefer the short/smooth coats as they do not pick up grass seed, and are very easy to maintain, with the occasional swim to keep the coat glossy and free of parasites. Colouring Koolie colours are classed as Solid or Merle. A Solid does not show any Merle pattern, and can come in any colour such as all one colour black, red, chocolate, cream, dilute red (fawn), dilute blue (lilac), with tan points, black & white, dilute & white or red & white, or "Tri" -solid red or black, with white markings, normally with brown points. Any of these can then have the Merle pattern ie usually with large splashes of darker colourings of red/chocolate for red merles or black/grey for blue merles. Black Koolies will commonly have a black nose with black eyes, or tones of black including blue. Red or chocolate Koolies will commonly have a red or chocolate nose with brown eyes, or tones of brown, including yellow, and there can be combinations of both black or brown with the added blue eye/s. There are also dilute colours of slate/blue for black Koolies and lilac/fawn for red Koolies. Yellow/cream can also be displayed when the dog is homozygous recessive on the "E locus." This recessive red (also known as Australian Red in some breeds) is considered a masking gene in that it prevents the production of black coat pigment (base skin pigment remains unaffected). Because of this, it is considered a masking gene that prevents the expression of the merle gene (and some others). In 2019, many Koolie breeders took part in the research project to find a DNA test for the Merle gene, as it was believed many non Merle looking dogs could be genetically a Merle and therefore have issues when bred