A useful iguana record is one dated line a day, written in the same format every time, covering the same five fields: food offered, amount eaten, droppings passed or none, urate appearance, and basking or activity notes. One line takes under a minute, but fourteen of them in a row will show a vet a pattern that no owner's memory can reconstruct honestly: the slow slide in appetite, the droppings that changed the week the enclosure cooled, or the weight quietly trending down behind a stable-looking appetite.
The Five Fields, Filled In Properly
Food offered means the actual menu that day, not the plan: which greens, vegetables and fruit went in, in roughly what quantity. Amount eaten should be an honest fraction, such as most, half, a few mouthfuls or nothing, because iguanas scatter food and scatter looks like eating. Droppings passed or none is a straight yes or no, with a word on consistency when it differs from usual: firm, soft, watery, or unusually dry and scant. Urate appearance covers the white or pale part passed with the droppings, noting colour shifts toward yellow or orange and any gritty texture. Basking or activity notes capture where the iguana spent the day: hours under the basking spot, hiding all day, soaking, restless glass-scratching, or unusually still.
Record at the same time each evening, from the day itself, never reconstructed on Sunday from memory. A line that honestly says appetite unknown, away all day still protects the record's credibility better than a guessed entry.
Weighing Adds the Anchor
Appetite impressions lie politely; scales do not. Weigh the iguana once a week, on the same day, at the same time, on the same scales, and write the figure at the head of that day's line. A growing juvenile should trend upward steadily, while a stable adult should hold within a narrow range. A falling trend across three or four weekly weights, even with reasonable appetite notes, is exactly the kind of pattern worth booking a vet visit for, and it is invisible without the numbers.
Photograph the enclosure thermometer readings if the dials are hard to read later, and note shed dates and any enclosure change, bulb swap or new food on the day it happens, in the same line. Context is what turns raw entries into an explanation.
Reading the Log for Patterns
Every week or so, read down the columns rather than across the days. Look for appetite falling over several days instead of one refused meal, droppings becoming fewer, drier or persistently loose, urates darkening, or basking behaviour shrinking toward the hide. Then look sideways for causes recorded in the same lines: a cool spell in the room, a new staple green, a recent move or a disrupted light cycle.
Some patterns are seasonal and harmless in a healthy animal, and only the vet can judge which is which; your job is to make the pattern undeniable. A run of missed droppings with falling appetite, visible weight loss, lethargy, a sunken look around the eyes or any breathing difficulty stops being log-keeping and becomes a prompt vet call.
Taking the Log to the Vet
Bring the whole record, not a summary of its highlights. Reptile vets read husbandry from logs: feeding rhythm, dropping frequency and basking hours point them toward enclosure problems, diet gaps or illness far faster than an examination alone. Ask which fields they want kept and whether they want weights more often, and adjust the format to their answer.
KinsLe holds the daily lines and weekly weights in the Pet Passport, forming a tidy iguana record you can hand to any reptile vet.