Some dogs just love to hold something in their mouth. Retrievers have a “soft mouth” that can hold birds without damaging them while they retrieve them.

My dog enjoys carrying things in his mouth and playing tug of war. He also loves sleeping with his back pressed against mine, and being warm under blankets.

It’s just part of their personality, but be sure they know the commands “leave it!” and “drop it!”.

It should be fine. Consult a canine behaviour specialist if you can afford it, just to be sure.