The diet of feral cats (Felis catus) on Alegranza Island (North of Lanzarote, Canary Islands)

Abstract

The diet of feral cats on Alegranza has been studied by analyzing 110 seats. A total of 199 prey items have been identified indicating that introduced mammals (Oryctolagus cuniculus and Mus sp.) constitute the basis of the diet appearing in 100 of the samples and representing 99,5% of the consumed biomass, Fortunately, it appears that breeding seabirds are not represented in their diet. However the species constitutes a potential threat to the birds if its present prey declines in number.