A carpet beetle perhaps?

Thanks.

Based on where it was located and it's overall appearance and movement, I would say it's a VARIED CARPET BEETLE. Finding any could be reason to do a treatment since it most likely emerged from an egg which was laid in the carpet. And if there was one egg in the carpet, there is no doubt more. This would mean eventually there will be more larvae hatching and as our article explains, the larvae do nothing but eat and eat. If left unattended, they'll no doubt do a lot of damage to anything fabric. Initial infestations can go unnoticed when feeding in carpeting but once they move on to furniture and clothing, their feeding can become quite noticeable.

More on beetle larvae identification