The majority of cattle grown in Scotland are from the group called bos taurus, which comprises both beef cattle and dairy breeds which are suited to European climates. Another group, bos indicus or oriental cattle, which have evolved to be able to withstand intemperate climates, are commonly grown in parts of South America and parts of Australia. Bos indicus meat is generally accepted to be less tender than bos taurus, deemed to be the result of the former’s slower growth rate.
Source: Factors affecting beef eating quality, Quality Meat Scotland, 2004