The coil that never changes
Yes. Few snakes are worse served by eyeballing than the green tree python. Its signature posture, draped in symmetrical coils over a branch with the head resting in the centre, is a sculpture that looks the same on a snake in perfect condition and on one that has refused food for a long stretch. Add that this is a display animal, admired more than handled, and weeks can pass with no real information about its body at all. A periodic weight, taken carefully, replaces the sculpture with a fact, and a run of weights shows whether the perch-perfect coil is backed by a healthy animal.
Feeding records for a tong-fed ambush hunter
Green tree pythons strike from the perch, usually at night, and feeding success is tied to presentation, prey temperature and how secure the snake feels. Your log should capture that detail: prey offered, whether it was taken from tongs, dropped, or ignored, and how long the snake showed interest before striking. Refusals clustered after enclosure changes, during a shed cycle or alongside low humidity readings form a pattern you can act on. Note also the perch the snake favours and any move to the enclosure floor, because a green tree python spending unusual time on the ground is communicating something its coil never would.
Humidity, sheds and droppings
This rainforest species lives or fades by its moisture cycle, so pair health entries with husbandry ones. Record misting rhythm and humidity range, then set shed quality beside them: complete sheds support the routine, while retained skin, especially over the eyes or tail tip, points back at the numbers you wrote down weeks earlier. Droppings and urates dropped from the perch are easy to date in a clean enclosure, and a change in their frequency or appearance belongs in the record. Youngsters add another entry worth keeping: the colour change from juvenile yellow or red toward adult green, roughly tracked by date and photograph, is part of this animal's health story.
Weighing without wrecking the perch routine
Lift the removable perch with the snake still coiled on it and weigh both together, subtracting the perch's known weight, a method that respects how reluctantly this species should be unwound. If the perch is fixed, weigh during a calm evening move using a tub, keep it brief, and expect a defensive attitude from a snake woken in daylight. Weigh after a dropping and before a feed for comparable figures, and accept a slightly wider interval between sessions than you would keep for a handleable ground snake. The trend across calm, consistent weighings is the goal, not a dense chart bought with stress.
Signs that should reach a vet promptly
Contact a reptile vet if weight falls steadily across sessions, if regurgitation happens, or if you hear clicking or wheezing from a perched snake with its head raised. Retained shed on the eyes, a persistent ground-dwelling posture, gaping, or discharge around the mouth all warrant a visit, and spine prominence showing through the coil confirms the log's warning in visible form. Bring the humidity and feeding records, since this species' problems so often trace back to the conditions column.
All of that hangs together best as a single record the next keeper or vet can read whole, and KinsLe's Pet Passport holds your green tree python's records in one portable packet for exactly those handovers.