Dogfish is a name for a number of small sharks of several families. The best known of them are spiny dogfish and smooth dogfish. Spiny dogfish are slightly dangerous as their spines contain venom that can cause a painful wound. The commercial value of spiny dogfish has grown in the last few years and it is used for British popular "fish and chops", as well as for its oil and liver. However, since recently people have begun to show even more interest in the usage of dogfish, in particular, they have started to eat it more and to catch in considerable amounts for the dissection at medical colleges.

Experts consider that dogfish are the most abundant shark species, probably, for this reason the dogfish dissection is conducted much by the students of vertebrate anatomy. Another reason for choosing the dogfish dissection for the medical college practice can be that these shark species bring damage to commercial fishing, as they can eat almost everything in a net or damage nets significantly. Hence, they are treated as invaluable and only destructing species. However, are the animals responsible and should be killed for their actions?

We are not satisfied enough that we eat animals, but we also kill them for nothing. The dogfish dissection is a business of fast coming dollars, as the species are innumerous, but not easy to catch. This is the basis for the price determination. Therefore, such "businessmen" kill dogfish in thousands to provide this or that particular medical college. Why do the students of medical colleges continue using the dogfish dissection then? They do it, since somebody needs to make money and is so "inventive" to create a business of such kind.

We may agree that eating dogfish is less nature destructing, as they are still many, they have no bones (thus, easy to cut and cook), they have little wastage, which is primarily a dogfish head. Nevertheless, people should keep a close eye on the species quantity and specially harvest them for this aim.

It is necessary to point out that dogfish are not the only species used for the dissection, as there are also such "abundant" animals as cats, dogs, frogs and many others. Many medical colleges stop using the animal dissection at the lessons; the others employ it partly along with a virtual animal dissection. However, people still leave dogfish without attention in this connection, as the talk is primarily about cats and dogs. Additionally, these are not college administrators and staff, who take the initiative in animal protection, though the students are the ones, who have just stopped dissecting. Indeed, the younger generation is much wiser than the adult one.

When the matter concerns animals, we do not pay attention to them when they are many, but when they become rare or even extinct, we spend millions of dollars for protective and recreational programs. As many of us like to say, better late then never. We often forget the more widespread and practical wisdom: "Do not leave for tomorrow what you can do today".