Frequencies of feline blood types in northern Portugal
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Updated: Aug 20, 2026

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Published on: September 28, 2022
Ana C Silvestre-Ferreira1, Josep Pastor, Odete Almeida
1Department of Veterinary Sciences, University of Trás-os-Montes e Alto Douro, Vila Real, Portugal.
Abstract:
The frequencies of feline blood types in northern Portugal were studied by surveying 185 pedigreed and nonpedigreed cats. Blood typing was performed by the traditional tube method. As a single group, the majority of cats were type A (90.3%), 3.8% were type B, and 5.9% were type AB. Among pedigreed cats, 19 were Siamese and 7 were Persian; all but 1 were type A. Among nonpedigreed cats, 89.3% were type A, 4.4% were type B, and 6.3% were type AB.

