Staphylococcal Infection in Dogs & Cats: Symptoms, Diagnosis & Care [2025]
Bacterial skin infection requiring antibiotic treatment
When to See a Vet
Seek Emergency Care Immediately
- •Persistent high fever lasting more than 24 hours accompanied by lethargy
- •Large amounts of pus continuously draining from a wound
- •Sudden collapse, unresponsiveness, or inability to stand
Schedule a Clinic Visit Soon (within 24–72 hours)
- •Noticeably reduced appetite with days of not eating or eating very little
- •Persistent redness and swelling of the skin with repeated scratching or biting
- •Changes in elimination such as diarrhea or significantly abnormal urine output
01What symptoms indicate something is wrong?
Staphylococcal infection most commonly presents with skin and mucous membrane symptoms, and may also cause general systemic illness. The following are common warning signs and clinical presentations.
- Noticeably reduced appetite or refusal to eat
- Persistent or recurring fever and lethargy
- Repeated scratching, skin redness, swelling, or oozing sores
- Localised pain — pet flinches or pulls away when touched
- Red, swollen eyes with discharge or signs of discomfort
- Seek veterinary care promptly if any of the above signs worsen or persist
Seek emergency care immediately if you notice the following symptoms:
- ⚠️ If your pet shows systemic illness or a wound with heavy purulent discharge, seek emergency veterinary care immediately
Pet Health Map App
Turn every worry into your pet’s health record
Download the app to save AI Care reports, build your pet’s medical profile, and keep tracking symptoms and care notes.
Android version coming soon. The web version is available now.
02How to assess the situation at home — observation checklist and criteria for seeking emergency care
Monitoring key indicators at home and keeping a record helps your vet quickly assess the condition and track the response to treatment.
- Track appetite and record how much your pet eats at each meal
- Measure body temperature daily and note the time and reading
- Photograph or video the scratching, swollen, or wounded areas
- Monitor your pet's alertness, activity level, and breathing
- Note any changes in toileting frequency or the character of urine and faeces
- If there is no improvement within 24–48 hours or symptoms worsen, see a vet
03How will the vet diagnose this? Common diagnostic tests
Your vet will combine clinical examination with laboratory tests to identify the source of infection, determine severity, and assess for concurrent disease.
Physical and skin examination
assessing the extent of involvement and degree of pain
Blood biochemistry and complete blood count
checking for systemic inflammation or organ involvement
Urinalysis
ruling out urinary tract infection or systemic changes
Cytology or tissue biopsy
evaluating local infection or inflammatory cells
Bacterial culture and sensitivity testing (performed as indicated)
04Treatment and home care after diagnosis — medication, diet, and nursing guidance
Treatment focuses on controlling infection, relieving symptoms, and addressing the primary lesion. Regular follow-up is essential to ensure stable recovery.
- Oral or topical medication and wound management based on test results
- Dietary adjustment to maintain nutrition, and keeping the skin clean and dry
- Record body temperature and wound changes daily at home
- Attend follow-up appointments as recommended by your vet to assess treatment response
- If symptoms recur or treatment is not effective, referral to a specialist hospital may be advised
05What to prepare before the vet visit — key information to help your vet quickly identify the cause
This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.
