A dentist is the health care professional who specializes in the diagnosis, prevention, and treatment of diseases and conditions of the oral cavity (including the teeth, gums and other soft and hard tissues of the mouth). Dentists, also known as 'dental surgeons', help us maintain a bright healthy smile.
The dogfish sharks are classified in the phylum Chordata Chordata, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development.
Fish Home. Dogfish sharks are characterized by smooth dorsal fin spines, teeth in upper and lower jaws similar in size. The spiny dogfish or piked dogfish is a type of small shark and one of the best known of the dogfish. Just the Facts: The spiny dogfish has dorsal spines, no anal fin, and white spots along its back.They can grow up to 107 cm and are greyish brown in color.he spiny dogfish or piked dogfish is a type of small shark and one of the best known of the dogfish. Just the Facts: The spiny dogfish has dorsal spines, no anal fin, and white spots along its back. They can grow up to 107 cm and are greyish brown in color.