Learning how to groom a guinea pig starts with checking the coat, choosing suitable tools and recognizing when to get help.
Check before you brush
Look over the coat and the fur around the rear end. Notice new soiling or changes in normal grooming. RSPCA England and Wales recommends specialist advice if you are unsure about grooming, and immediate veterinary advice if you suspect pain, illness or injury.
Make contact manageable before adding a tool. Use the separate guinea-pig handling guide for approach and physical support. End contact rather than holding the animal still to complete brushing.
Match the tool to the coat
In its guinea-pig care guide, Blue Cross describes a soft brush for short hair, and a double-sided comb and slicker brush for long hair. Those descriptions do not make every tool with that label suitable for your animal.
RSPCA Australia describes a small brush and metal comb. If the choice is unclear, ask a professional to demonstrate an appropriate tool rather than combining every recommendation.
Work gently, then pause
Brush gently in the direction the hair grows, removing loose hair and easy surface debris. Continue only while the contact remains manageable. If the tool catches or the animal moves away, pause instead of increasing pressure or pursuing a complete coat.
Difficult tangles, persistent soiling or concerning skin changes need individual advice. Stop that job and seek suitable professional help; do not improvise with scissors beside the skin.
Finish and choose the next step
Blue Cross recommends daily grooming for long-haired guinea pigs. RSPCA Australia also distinguishes coat length and shedding.
Ask your vet to show you how to assess nail-care needs. Brushing does not automatically call for a bath or a home nail-cutting session.
If the resting surface also needs attention, keep that separate from grooming. For a fleece liner, use the liner preparation and washing guide.