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.
Warren hound Warren hound Warren Hound refers to the group of Mediterranean hare-hunting dogs. In Spanish, this kind of breeds are called "podencos" and in Portuguese, "podengos". Generally speaking, a warren hound has erect ears, a smooth (or in some cases, wire) coat, a slender body, and a whip-like tail. However, there are some exceptions: for instance, the Cretan Hound has usually rose-ears and a curly or curved tail, while the Barrocal Algarvio is long-haired, and the Podenco Paternero and some Campaneros have a robust, almost Mastiff-like body. Unlike hounds or sighthounds which rely on just one sense, warren hounds tend to