why do bds hold mouth open when basking

[beardienewbie]

i'm curious why a beardie would hold their mouth open when basking. i was visiting a friend who had one and he asked me if he should worry or if i thought it was normal. i told him i'd let him know what i find if i could

 

[Sadie]

i'm curious why a beardie would hold their mouth open when basking. i was visiting a friend who had one and he asked me if he should worry or if i thought it was normal. i told him i'd let him know what i find if i could

He is regulating his body temp and this is normal