Fresh and thawed peas are a cheerful little treat
Yes, a hamster can eat peas, and the round green shape seems to invite the two-paw hold that makes pea-eating such a good photograph. Pod fresh peas yourself and offer one or two, or thaw frozen peas fully until they are soft and at room temperature. A Syrian hamster manages a whole pea easily; for a tiny dwarf, one pea split in half is a tidier serving. Peas can be offered whole — there is no need to mash them for a healthy adult — and most hamsters eat skin and all, though some peel the outer skin and discard it, which is harmless fussiness.
Sweetness is the thing to manage
Peas taste sweet to a hamster because they carry natural sugars along with their fibre, protein, and vitamins, and that sweetness is why portion discipline matters more here than with a green bean. One or two peas a couple of times a week sits comfortably in a treat rotation; a spoonful of peas every night tilts the diet, fills a small stomach with one food, and adds sugar load that dwarf hamsters in particular do not handle well over time. Keep peas in the treat category alongside fruit, and let plainer vegetables carry the everyday fresh-food role. Magnum-sized garden peas and small petit pois are both fine at the same one-or-two count.
Forms of pea to keep out of the cage
Tinned peas are the clear no: they are stored in salted water, and that salt has soaked into the pea itself, so rinsing only partly helps. Mushy peas and pea-based dishes cooked for people bring salt, fats, and flavourings with them. Frozen peas served straight from the freezer are the other trap — a frozen pea is hard enough to challenge teeth and cold enough to be an unpleasant mouthful, and a pouched frozen pea melting in a warm cheek is nobody's idea of a good snack. Dried peas from soup mixes are also too hard and are sometimes sold seasoned. If you grow peas, pods picked fresh and rinsed are the simplest source of all, and the empty pod itself can be offered washed for gnawing.
Sugar snap peas sit in a middle ground worth knowing about: the peas inside a young pod can be shelled and served exactly like ordinary peas, and a washed pod itself, split open, gives a Syrian hamster a crisp, mildly sweet shell to gnaw through. Mangetout follows the same rule — what is inside or the tender young pod, in small pieces, counts as one serving. Count pod and peas together rather than serving both on the same evening, because the sugars add up across the whole item, and a dwarf hamster in particular should get the smaller half of whatever form you choose.
After the first peas
Watch for the normal pattern: peas eaten eagerly, droppings firm the next day, and the regular mix still finished. Persistent soft droppings after such a small serving suggest peas do not suit your particular hamster, so drop them from his list and note it rather than testing again. Any hamster who stops eating altogether, hunches quietly, or develops a wet tail should see a veterinarian the same day regardless of what was on the menu. Sweeter treats are the ones families repeat without realising, because everyone enjoys the reaction — recording pea night in KinsLe with Care Teams, ticked off once served, keeps peas as the occasional pleasure they should be.