The study analysed smallholder fatteners’ preference for breed of sheep attributes under feedlot system in Kano Metropolis, Nigeria. A Snowball sampling technique was used to select 70 sheep fatteners. Five locations were purposively selected due to high concentration of sheep fatteners operators. Primary data was collected through the use of structured questionnaire and was subjected to descriptive statistics. The results revealed that all (100%) of the fatteners were male and most (84.3%) of the fatteners were married. The average age and years of fattening experience of the respondents were 46 and 26 years respectively, with average household size of 10 persons and a mean flock size of 8. Majority (61.4%) of the sheep fatteners received western education and 85.7% of the sheep fatteners belonged to farmer cooperatives. The management practices carried out by the sheep fatteners were feeding, watering, housing, animal health treatment and fattening duration. Also, the result shows that almost all (95.9%) of the sheep fatteners preferred the Uda and Balami breeds of sheep to any other breed because of the Carcass quality, body size, skin type/colour, horn type, tail type and type of ear. The study concluded that Uda and Balami were the most preferred breeds by fatteners in the study area. High cost of feed (100%) ranked as first constraint followed by pest and disease problems and insecurity with 94.3% each and high cost of medication (93%). The study recommends that provision of adequate and affordable feed and medication, veterinary services to carter for pest and diseases and improvement in security are essential in improving sheep fattening enterprise.