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Compared to similarly sized fish, mammals and birds typically have brain sizes fifteen times larger, though some species of fish such as elephantnose fish have very large brain-to-body ratios. However, fish still display intelligence that cannot be explained through Pavlovian and operant conditioning, such as reversal learning, novel obstacle ...
Although tool use was long assumed to be a uniquely human trait, there is now much evidence that many animals use tools, including mammals, birds, fish, cephalopods and insects. Discussions of tool use often involve a debate about what constitutes a "tool", and they often consider the relation of tool use to the animal's intelligence and brain ...
The book has been admired by reviewers, who have found it delightfully written, [1] undogmatic but incisive in its analysis, [2] and its account of intelligence as a subjective embodied experience elegantly told. [3] His octopus subjects come across as "uncannily personable without being at all human." [4]
Fish fulfill several criteria proposed as indicating that non-human animals experience pain. These fulfilled criteria include a suitable nervous system and sensory receptors, opioid receptors and reduced responses to noxious stimuli when given analgesics and local anaesthetics, physiological changes to noxious stimuli, displaying protective motor reactions, exhibiting avoidance learning and ...
Anadromous – fish that live their adult lives in the ocean but migrate up fresh water rivers to spawn. Examples are Pacific salmon. Fish that migrate in the opposite direction are called catadromous. Anoxic sea water – sea water depleted of oxygen. See hypoxia. Anoxic sediments – sediments depleted of oxygen.
The Case for Animal Rights is a 1983 book by the American philosopher Tom Regan, in which the author argues that at least some kinds of non-human animals have moral rights because they are the "subjects-of-a-life", and that these rights adhere to them whether or not they are recognized. [1]
Books about ethics, a branch of philosophy that "involves systematizing, defending, and recommending concepts of right and wrong behavior". Subcategories This category has the following 5 subcategories, out of 5 total.
The "unfolding" of a protein resulting in a lessening of its biological properties. In the case of some fish toxins, denaturing with hot water can lessen painful symptoms. dentate Having tooth-like projections. denticle, denticulate A little tooth, having an edge with small projecting teeth, the placoid scales of cartilaginous fishes. depressed