**4. Staphylococcal infections in animals**

The only bacteria that cause significant disease in animals are *Staphylococcus aureus*, *Staphylococcus epidermidis*, *Staphylococcus hyicus*, and *Staphylococcus pseudintermedius*. Other Staphylococcus species exist primarily correlated with devious animal infections. *S. aureus* produces septic arthritis in hens, as well as subcutaneous abscesses. *S. aureus* is a common cause of dermatitis in goats and sheep, and it can cause botryomycosis in horses and pigs, a persistent, suppurative granulomatous illness. *S. aureus*, like *S. pseudintermedius*, causes suppurative illnesses in companion animals. *Staphylococcus hyicus* causes exudative epidermitis, called as greasy pig sickness. In several countries, methicillin-resistant *S. pseudintermedius* is becoming a significant clinical issue in veterinary medicine [13].

Intramammary infection causes in different animals: Even though bovine IMIs are the most economically significant, staphylococci IMIs can generate substantial losses in locations where sheep and goats are raised for milk. Similarly, substantial financial losses have been reported in places where buffalo or camel milk is generated because of mastitis. Due to IMI problem, financial loss occurs in different ways—rejection of milk because of its poor quality or milk withdrawal after or before medication, high treatment fees, high labor cost all these include [12, 14]. Aside from the apparent economic losses caused by IMIs, there are sum of indirect expenditures that are difficult to measure. Subclinical diseases in a herd usually go undiagnosed, causing in a steady drop in milk supply and a reduction in total milk value. This results in a consistent loss of income surplus, even when found, can take a considerable amount money and time to cure [9].

This species *S. aureus* is possibly the most well-known mastitis pathogen because once infection occurs due to this species, its unable to treat and become persistent [15].

### **5. Structure**

#### **5.1 Taxonomy**

RNA hybridization, ribosomal DNA (r-RNA), and approximately 16 oligonucleotide r-RNA analyses also reveal that Staphylococci compile family level infidelity. This social problem occurred in a wide group of Bacillus-Lactobacillus-Streptococcus, which described Gram-positive bacteria with low G + C DNA components. In any event, Biochemica discovered 30 different kinds of staphylococci [3, 16].

Eleven of these may be secured with individuals such as guests. *S. aureus* (nares) and *S. epidermidis* (nares, skin) are fundamental visitors with the highest pathogenic potential. *S. saprophyticus* (skin, occasionally) is another common cause of urine plot contamination. *S. hemolyticus, S. simulans, S. cohnii*, and *S. warter* are all bacteria. Furthermore, *S. lugdunensis* can cause illness in people [6].
