It is durable, but my dog seems loss interest in it quickly, may be it is him.
It passed the chewing test of a 13-month-old golden retriever/poodle, once he found out this is for his tooth, he lost interest in it, he just lick the toothpaste and leave the brush along, I play tug of war with him using this, he seems to like it as a toy, and by tugging inside of his mouth, accomplished the original goal to brush his teeth.
Rating: 4 stars