A crested gecko's first record is measured in grams, so start with a weight taken on a small digital scale once he has settled, plus a note of where he came from and whether he still has his tail. A dropped tail never grows back in this species, and recording its presence or absence on day one prevents confusion later about when it happened. Add photographs from above and the side; a gecko's body condition shows in the hips and the width of the head, and early photos make later comparisons honest.
Diet notes for a gecko who eats from a ledge
Log what your crested gecko is offered and what actually disappears: the prepared diet flavour, how fresh each serving was, and how much was gone by morning. Crested geckos eat small amounts, often overnight, so the record should note lick marks and partial bowls rather than expecting an empty dish. Write down live insect feeds separately, including how many and whether they were dusted, because insects offered too often can crowd out the balanced prepared diet. A gecko who stops touching a flavour he used to eat is giving you information, and only a written run of servings shows the change clearly.
Misting, humidity, and temperature entries
Record your crested gecko's misting rhythm and the humidity range it produces, since this species drinks droplets from leaves and needs the air to rise and fall rather than sit damp. Note the room and enclosure temperature alongside, because crested geckos are stressed by heat that many other reptiles would enjoy, and a hot spell should appear in the log next to any drop in appetite. When you change the misting schedule, add a plant, or move the enclosure to another room, date the change. Gecko behaviour that puzzles you in a month often lines up exactly with one of those dated lines.
Sheds, toes, and tail-tip checks
Write down each shed your crested gecko completes and whether the skin cleared from the toes and the tip of the tail. Retained shed on those small toes can restrict them quietly, and a note that says residue remained is the prompt to raise humidity and check again after the next shed. Record his weight on a regular rhythm in the same place, because a gecko losing grams steadily while eating notes look unchanged is a pattern that deserves attention. For a female, log any eggs laid, even infertile ones, with how she behaved beforehand and whether her appetite returned.
Vet thresholds written into a small animal's record
Contact a reptile vet if your crested gecko loses weight across repeated weigh-ins, if toes keep retained shed or look swollen, if he becomes wobbly or weak-gripped, or if a female strains without producing an egg. Bring the gram-by-gram weight history, diet notes, and humidity rhythm, because in an animal this small the trend is the evidence. Filing the first weight, diet log, misting rhythm, and shed checks in a KinsLe Pet Passport keeps a crested gecko's small numbers together where their slow story can actually be read.