Yellow mouth?

[crv2v3]

https://ibb.co/NCgNNk7

I’ve seen other threads on this but none of them really look like my boy? I’m assuming it’s just pigment, since his behavior hasn’t changed, but it was very sudden, so I’m worried. Thank you!

 

[AHBD]

Yes a lot of beardies have yellow mouth but if it came on suddenly you might want to have a vet check it out and maybe do bloodwork. It's most likely nothing though since his behavior is the same.