1 Pancreatitis. 2  One of the most important, and potentially dangerous, diseases is inflammation of the pancreas. 3  Pancreatitis is a common disease of dogs, and often arises when foods high in fat content are eaten. Pancreatitis is a common disease of dogs, and often arises when foods high in fat content are eaten. 2  It usually causes loss of appetite, vomiting, abdominal pain and depression. 3  In severe cases, the condition can be fatal. 4  Diabetes mellitus.
The molluscs or mollusks /ËmÉlÉsks/ compose the large phylum of invertebrate animals known as the Mollusca. Around 85,000 extant species of molluscs are recognized.Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms.Numerous molluscs also live in freshwater and terrestrial habitats.round 85,000 extant species of molluscs are recognized. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats.
Â© Jonathan Bird/ORG. For educational use only. There are over 50,000 known species of Mollusks, which makes them second only to the Arthropods in invertebrate phylum size. Among the Mollusks are some of the most well known of invertebrate sea creatures, like snails, clams, mussels, squid, and octopods.Although one might not see an obvious physical relationship between a snail and a squid, they are remarkably similar in construction.n general, mollusks have 3 body regions: a head, a visceral mass, and a foot.. The head contains the sense organs and brain, while the visceral mass contains the internal organs. The foot is the muscular lower part of the body which is in contact with the substrate.