Yes. Guinea pigs are very social animals and should normally live with at least one other friendly guinea pig. RSPCA guidance says guinea pigs can suffer and develop abnormal behaviour if left alone for long periods.

No, rabbits and guinea pigs should not usually live together. RSPCA guidance says rabbits and guinea pigs communicate differently, have different dietary needs and rabbits may injure or bully guinea pigs. Guinea pigs are best kept with other guinea pigs.

Vegetables, hay and pellets. You can also treat them with frage, fruits and pea flakes! 

Onions, chocolate, bread, seeds, meat, 

Guinea pigs need vitamin C in their diet because they cannot make enough of it themselves. Good sources include suitable fresh vegetables and guinea pig-specific pellets. Fresh food, pellets and water should be checked regularly to help keep them healthy.

Guinea pigs should avoid foods that can be harmful, including iceberg lettuce, potato, garlic, avocado, coconut and lawnmower clippings. Sugary treats and muesli-style mixes are also best avoided because they can lead to poor nutrition or digestive issues. For more information, have a look at what the RSPCA says about it: https://www.rspca.org.uk/adviceandwelfare/pets/rodents/guineapigs/diet

Guinea pig housing should be spot cleaned daily to remove soiled bedding and mess. Blue Cross recommends a full clean around once a week on average, although this may need to be more often depending on the number of guinea pigs and the size of the setup.

Pampered Piggies advises that guinea pigs should not be left alone for more than 24 hours without someone to care for them. They need daily food, fresh water, spot cleaning and health checks.

Warning signs include eating less, weight changes, low energy, breathing changes, limping, diarrhoea, runny eyes or nose, hair loss, lumps, overgrown teeth or wounds. Guinea pigs can hide illness, so contact a vet quickly if something seems wrong.