Satin cavies refer to breeds of guinea pigs that have glossy coats which are very distinctive. The breeding for this kind of coat can occur with many varieties of cavy including Abyssinian, Rex and even hairless!
Satin bred guinea pigs can be prone to osteodystrophy which can require treatment including calcium supplements (if caught early) and painkillers. Sadly, OD in guinea pigs is a painful disease and a decision to euthanise may need to be taken to prevent suffering. Symptoms can occur as early as 12-18 months old with signs being a wobbly or unbalanced gait, change in eating habits and temperament.