The term zooagnosia has been used to describe a difficulty in recognizing animal faces. This may be observed as a component of prosopagnosia. In one case, this deficit seemed to persist despite improvement in human face recognition, suggesting the possibility of separate systems for animal and human face recognition; however, the evidence is not compelling.
Assal G, Favre C, Anderes J. Non recognition of familiar animals by a farmer: zooagnosia or prosopagnosia for animals. Revue Neurologique(Paris) 1984; 140: 580-584