Dusky smooth-hound time to induce tonic immobility in smooth dogfish was 32.5 seconds. The mean duration of the tonic immobility was 61.9 seconds. Sharks that had the “limp” response also exhibited tonic immobility. The “limp” response is a criterion for the onset of tonic immobility. Dusky smooth-hound The dusky smooth-hound ("Mustelus canis"), also called the smooth dogfish or the dog shark, is a species of houndshark in the family Triakidae. This shark is an olive grey or brown in color, and may have shades of yellow or grayish white. Females live to 16 years and males have a lifespan of 10 years.
Ibizan Hound Ibizan Hound The Ibizan Hound (, ) is a lean, agile dog of the hound family. There are two hair types of the breed: smooth and wire. The more commonly seen type is the smooth. Some consider there to be a third type, long, but the longhair is most likely a variation of the wire. The Ibizan Hound is an elegant and agile breed, with an athletic and attractive outline and a ground-covering springy trot. Though graceful in appearance, it has good bone girth and is a rugged/hardy breed. Its large upright ears - a hallmark of the breed -