A prey animal's first instinct is to disappear
Expect your young guinea pig to spend much of the first week inside a hide, bolting for cover at footsteps, voices, and the enclosure lid opening. That fear is hardwired, not a verdict on your home, and it softens in layers: first he eats while you are in the room if you sit still, then he stays out when you move slowly, then he begins calling when he hears food being prepared. A companion guinea pig, introduced appropriately, speeds every stage, because a youngster alone must be brave by himself while a pair takes turns being lookout.
The setup he checks before he relaxes
Unlimited hay matters from the first hour, for eating, tunnelling, and hiding in, alongside a water bottle, a measured portion of pellets, and at least one hide per pig with entrances that do not create a dead end. Set the enclosure somewhere with household life at a distance, off cold floors, out of direct sun, and away from the stare of dogs and cats. In week one, clean only the most soiled patches, and place vegetables near the hide door so eating well does not require being brave in the open before he is ready.
Feeding milestones to watch for
A settled-enough youngster progresses from hay-only nibbling in hiding to taking leafy greens from the hide entrance, then from your hand by the end of the week if you move slowly and let him retreat with the prize. Daily vitamin C comes through his diet of suitable vegetables and pellets, offered consistently rather than in occasional large amounts that upset a young gut. Note which vegetables he actually eats and how his droppings look, because steady, uniform droppings are one of the clearest signs his digestion is coping with the move and the new menu.
Handling: brief, low, and fully supported
Postpone picking him up for the first couple of days unless a health check requires it. When you do start, herd him gently into a fleece tunnel or cup rather than chasing him around the enclosure, support his whole body including the hindquarters, and sit on the floor so a wriggle is not a fall. Five calm minutes with a vegetable to eat teaches more trust than half an hour of being held while tense. Children should hand-feed and stroke a pig already settled on a lap, not do the catching.
First-week warning signs in a guinea pig
Guinea pigs deteriorate quietly, so treat a youngster who stops eating hay, produces few or no droppings, sits hunched with a staring coat, breathes audibly, or develops loose droppings as needing prompt veterinary attention rather than another day of settling. Weighing him at the start of the week and again at the end, at the same time of day, gives you a number instead of a guess if you are worried he is not eating enough while hidden. Sneezing repeatedly in dusty hay or bedding also deserves a check rather than a wait.
Predictability is what turns a frightened youngster into a wheeking one, and KinsLe Care Teams lets everyone sharing his care assign the hay top-ups, vegetable feeds, and weekly weigh-ins so they happen at the same steady rhythm whoever is home.