Take the basking surface temperature today. If it is above 95°F, dim the lamp tonight. Re-measure tomorrow morning.
Heat stress in summer cages.
Ambient room temperature creeps in summer. The basking lamp does not know the room got hotter. Together they push juveniles into heat stress.

Heat stress reads as flat posture on cage floor, mouth gaping, dulled body color, and a refusal to climb back to basking. By the time you see all four, you are at a vet call. The earlier signal is a juvenile that abandons the upper third of the cage entirely on a hot afternoon.
We dim basking lamps in summer by stepping wattage down 25 watts and shifting the lamp three inches farther from the basking branch. We also run a small fan across the screen ceiling at low speed for one to two hours mid-afternoon to encourage convective cooling.
DSQUARED Reptiles — Living Art. Curated Genetics.
From the field notes archive.
Reading early gular edema before it becomes a vet visit.
Soft swelling under the throat can mean three different things. Two resolve at home. One needs an ARAV-listed reptile vet within the week.
MBD: the silent failure mode.
Metabolic bone disease is the most common preventable death in captive chameleons. Calcium, UVB, and basking temperature conspire — or fail to.
The egg-laying bin: substrate, depth, timing.
Gravid females need an egg-laying bin from the day you suspect they are gravid, not the day they start digging. Dystocia is a vet emergency.