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.
Basset Hound Basset Hound The Basset Hound is a short-legged breed of dog of the hound family. The Basset is a scent hound that was originally bred for the purpose of hunting hare. Their sense of smell and ability to ground-scent is second only to that of the Bloodhound. Basset Hounds are one of 6 recognised basset-type breeds in France. The name "Basset" is derived from the French word "bas", meaning "low", with the attenuating suffix "-et", together meaning "rather low". Basset Hounds are usually bicolours or tricolours of standard hound colouration. Bassets are large, short, solid and long, with curved sabre