Dog toothbrush.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...h_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net/dog_toothbrush.jpg
Previously:
https://www.homemadetools.net/forum/...677#post155759
https://www.homemadetools.net/forum/...196#post157799
https://www.homemadetools.net/forum/...858#post137249
https://www.homemadetools.net/forum/...370#post127030
