Small rabbit, small margins
Everything about a Netherland Dwarf is scaled down, including his margin for error. His bones are fine, his body carries little spare fat, and his short, rounded head packs teeth into a jaw with no room to spare, so dental crowding is a lifelong breed tendency that age turns into active trouble. A senior dwarf may look bright while eating less hay each day, lose condition across a fortnight that would barely register on a larger rabbit, and chill quickly in a draughty room. Senior care for this breed is therefore about proximity and speed: everything he needs within a few hops, and every change noticed and acted on while it is still small.
A world measured in hops
House him entirely on one level, on soft non-slip matting, with a hide he can walk into, a low-sided litter tray, and hay and water arranged around his chosen resting corner. Remove anything he might climb and fall from, because a dwarf's fall from a shelf is proportionally a long one onto fine bones. Offer hay in several small piles rather than one large rack he must reach up to, and use a heavy, shallow water dish alongside any bottle, so a stiff neck never has to choose between thirst and effort.
Teeth are the senior headline
Watch how he eats with the same attention you give to whether he eats. A dwarf who takes a strand of hay, works it, and drops it, who favours pellets or soft greens over hay, whose chin stays damp, or whose front teeth look uneven or overlong when he yawns is showing you a mouth that needs a vet. Back teeth cannot be seen at home, so behaviour is the examination. Keep offering hay constantly; it is his best natural tooth wear and gut driver. Weigh him weekly in a small box on a kitchen scale, and write the number down each time.
Handling a rabbit built lightly
Handle a senior dwarf at floor level, seated, with his body fully supported in both hands and his feet never dangling, and keep sessions short. A startle from fading sight or hearing can send a small rabbit leaping from a height his bones cannot afford, so announce yourself with a voice and a hand he can smell before any scoop. Most care can happen without lifting at all: groom him gently where he sits with a soft brush, check his rear and feet in his pen, and trim nails in brief sessions with a second person steadying rather than gripping.
Gut, warmth, and same-day action
Count his droppings at each tidy; they are small, so judge by the pile, not by spotting a few. A shrinking pile, a quiet hunched posture under his hide, or food refused across a morning is a vet call the same day, because a dwarf's gut and energy reserves run down in hours rather than days. Keep his room steady and draught-free, with a fleece in the hide he can burrow into, since a lean senior dwarf loses heat fast. Laboured breathing, drooling with refusal to eat, a head tilt, a fall followed by limping or stillness, or a swollen belly all belong on the immediate list, with hay, water, and quiet warmth provided while you travel, never instead of travelling.
Frequent notes for a fast-moving patient
A dwarf's vet gets more from a week of your small observations than from any single dramatic symptom: weights, hay intake, droppings, the day the chin turned damp. Written in order, they make the pattern obvious at a glance. KinsLe's Pet Passport suits him well, gathering those frequent notes and vet findings into one portable packet that any carer can hand over complete.