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Mertolenga
The Mertolenga is a cattle breed from Portugal, one of thirteen registered Portuguese breeds (as of 2003), making up around 19 per cent of cattle in that country.[1]
The breed region is circumscribed almost exclusively to southern Portugal in the Low Alentejo, and Ribatejo regions.
These are the cattle breeds considered in Portugal to be wholly or partly of Portuguese origin. Inclusion here does not necessarily imply that a breed is predominantly or exclusively Portuguese.