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Cataracts typically occur when proteins break down in the lens of a dog's eye and clump together, obstructing the passage of light. [ 1 ] [ 2 ] There are several reasons cataracts may occur in dogs, such as heredity, trauma, aging, diabetes , glaucoma , and progressive retinal atrophy .
In mammalian oral anatomy, the canine teeth, also called cuspids, dogteeth, eye teeth, vampire teeth, or fangs, are the relatively long, pointed teeth. In the context of the upper jaw, they are also known as fangs. They can appear more flattened, however, causing them to resemble incisors and leading them to be called incisiform. They developed ...
Shark teeth cannot be collected from just any type of rock. Any fossils, including fossil shark teeth, are preserved in sedimentary rocks after falling from their mouth. [13] The sediment that the teeth were found in is used to help determine the age of the shark tooth due to the fossilization process. [15]
Dogfish sharks use their strong jaw and sharp teeth to consume their prey. The spiny dogfish has broken several records in the areas of migration and gestation. This shark tends to be a highly migratory species: one shark was recorded as travelling 8,000 km (5,000 miles) after being tagged in Washington state, United States, and found again ...
An underwater photographer gives us a detailed look at a great white shark’s teeth. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 ...
There are some adult dog breeds that look completely different as puppies. From the Bergamasco to the Tibetian Terrier, these pups have appearances that change significantly as they grow up ...
[34] [35] [36] Shark teeth are embedded in the gums rather than directly affixed to the jaw as in some fish. [37] Shark teeth form within the jaw move outward in rows until they are eventually dislodged in a manner similar to a conveyor belt. [38] Their scales, called dermal denticles, and teeth are homologous organs. [39]
Like all sawsharks, reproduction is ovoviviparous. Longnose sawsharks give birth every other winter to between 6 and 19 pups in a litter. [7] After a 12-month gestation period, pups are born 27–37 cm (11–15 in) in length. [2] Their teeth are folded against the snout at birth, which protects the mother from harm.