Table 1.

Phenotypic Identification of S. pseudintermedius and its differentiation from S. aureus.

Test	S. pseudintermedius	S. aureus
Catalase	+	+
Coagulase	+	+
DNAase	+	+
Haemolysis	β-haemolysis	Double zone haemolysis
Trehalose	+	+
Maltose	+	+
Clumping factor	-	+
Pigment	-	+
Pyrrolidonyl arylamidase (PYR)	+	-
β-galactosidase	+	-
Acetoin production	-	+
Mannitol fermentation	-	+
Polymyxin susceptibility	Susceptible	Resistant
Hyaluronidase	-	+