“…It is known that S.aureus is one of the chief cause for mastitis and the extensive use of intramammary antibiotics in cattle, so it is not unanticipated that, MRSA was isolated from milk of a mastitic animal, which is first among animals (Devriese et al, 1972). After this MRSA has been isolated from various species like dogs (Pak et al, 1999), cats (Scott et al, 1988), sheep (Goni et al, 2004), horses (Seguin et al, 1999), pigs (Voss et al, 2005) and chickens (Lee, 2003). Methicillin-resistant Staphylococcus aureus (MRSA) is an important concern nowadays in pet animals for being a significant cause in nosocomial infections (Weese, 2008b; and also a threat of zoonoses to veterinary health care personnel (Loeffler et al, 2010;Burstiner et al, 2010) and horses may act as a reservoir of MRSA and serve as a source of infection to humans (Weese et al, 2005a (Enright et al, 2000), spa typing (Moodley et al, 2006).…”