Small, flat, and awake while you sleep
Crested geckos escape quietly. They are nocturnal, they climb sheer glass on padded toes, and a juvenile in particular can compress its body through a gap only a few millimetres tall — the space under a door, the slit where two sliding panels meet, the corner where a mesh top does not quite sit into its frame. Because they hide motionless all day, an escape may not be discovered until the following evening, which makes prevention and a reliable closing routine everything.
Inspect the enclosure the way the gecko travels: upward. Start at the substrate, follow each corner seam to the top, run a fingertip around the full door frame with the doors latched, and push gently at the mesh. Warped plastic frames, perished foam seals, and mesh that bows under light pressure are all exits in waiting, and warm rooms make plastic creep over time, so recheck a setup that was tight when new.
Doors, lids, and the holes drilled for equipment
Front-opening vivariums are ideal for this species, but only when the doors close onto an intact seal and the latch draws them fully home. If a door must be coaxed or clicks while still standing slightly proud, adjust or replace the fitting. For top-opening tanks, the mesh lid needs clips, not just gravity, because a gecko pushing from a tall plant at the corner has more leverage than its weight suggests.
Misting nozzles, probe wires, and drainage fittings all pierce the enclosure, and each entry needs a grommet or plug that closes the ring around it. Folded tape dries, lifts in humidity, and fails silently — use solid fittings. Vent panels should be fine, rigid mesh fixed on all edges; a gecko will test a loose corner of mesh nightly until it can slip behind it, where it may become trapped between mesh and glass.
Planting that does not build a bridge out
A crested gecko should live in dense vertical planting, but arrange it with the exits in mind. Keep the tallest leaves and branches a clear margin below the lid and vents, fix cork and ledges so they cannot shift against a door, and check that magnetic feeding ledges sit firmly — a ledge that drops can startle a gecko into a frantic dash when the door next opens. Avoid decor with hollow tubes or sealed cavities you cannot inspect; a missing gecko is very often a gecko asleep inside a hollow branch, and knowing every hiding place is inspectable turns a panic into a two-minute check.
Silicone any gap between a fixed background and the glass. Slipping behind a background is this species' favourite disappearing trick, and a gecko can stay there, unharmed but unfed and unwatered, far longer than is safe.
Feeding and the open-door minute
Crested geckos are often fed in the evening, exactly when they wake and become quick. Open one door at a time, keep a hand near the opening, and expect the gecko to be stuck to the door itself — check the inside face before swinging it wide. Close and latch before you turn to mix food or fill the mister. During handling, work over a table in a closed room; a startled gecko leaps first and thinks later, and a jumper that lands behind furniture is effectively loose.
Finding a gecko in the house
Search after dark, quietly, with a torch: high on walls, behind picture frames, inside houseplant foliage, and along curtain rails in the same room first. Place a small pot of its usual food paste and a shallow water dish near the enclosure overnight. Photograph its pattern and note whether the tail is present while it is home — both details identify it instantly — and if a night of searching fails, KinsLe can alert nearby members through its Lost Pet Alert System.