Arabian horses are treated as one of the most noble horse breed in the world. It isalso one of the oldest breed known as a root of many other breeds. Opposite toThoroughbred horses Arabian ones are very healthy, easy to keep with low fodderdemand. They are still incredibly resistant to environmental conditions. Growth anddevelopment of foals is also very interesting because it is more similar to growth ofprimitive than to noble foals. The object of this study was to analyse the growth rateof Arabian foals bred in Poland. 382 foals born in Bialka Stud in 1983-2003 weretaken under consideration. The height at withers, girth and cannon circumferencemeasured at 1 day and 6 and 18 months of life were analysed. On this base thegrowth rate was calculated. Horses were divided into different groups accordingtheir year of birth, sex, coat colour and sire and dam lines. The statistical differencesbetween particular groups were evaluated. It was stated that year of birth affectedsignificantly the growth rate of Arabian foals. Colts were characterized bysignificantly higher growth rate of cannon circumference. Horses of different coatcolour did not differ in growth rate of any parameter. Affiliation to particular sireand dam lines had some effects on growth rate of Arabian foals.