Guinea pigs "social groom" each other. Guinea pigs can learn complex paths to food and can accurately remember a learned path for months.
RSPCA - Advice and welfare for guinea pigs.

Guinea pigs cannot synthesize vitamin C and depend entirely on dietary sources. Deficiency rapidly causes lethargy as metabolic efficiency drops. B vitamins, some produced by cecal bacteria and some consumed directly, support energy pathways throughout the body.

Why Beetroot Matters for Guinea Pigs. Guinea pigs are herbivores with specific nutritional requirements that must be met through fresh vegetables, hay, and a measured amount of quality pellets.

Furthermore, visual representations like the one above help us fully grasp the concept of Vitamin E Supplements For Guinea Pigs Metabolism.
effectiveness and safety of nutritional supplements for the treatment of OA. Antioxidant Vitamins.The effects of ascorbic acid on cartilage metabolism in guinea pig articular cartilage explants. Matrix Biol 2002;21:175-184.