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Animal ability to process and respond to stimuli is correlated with brain size. Small-brain animals tend to show simple behaviors that are less dependent on learning than those of large-brained animals. Vertebrates, particularly mammals, have larger brains and complex behavior that changes with experience.
Not all animals have neurons; Trichoplax and sponges lack nerve cells altogether. Neurons may be packed to form structures such as the brain of vertebrates or the neural ganglions of insects . The number of neurons and their relative abundance in different parts of the brain is a determinant of neural function and, consequently, of behavior.
Pigs are among the most intelligent mammals on the planet; as such, they display a wide range of complex behaviors, like being able to play video games, understanding human instructions and even a pig species has been observed using tools.
The corvids (ravens, crows, jays, magpies, etc.) and psittacines (parrots, macaws, and cockatoos) are often considered the most intelligent birds, and are among the most intelligent animals in general. Pigeons, finches, domestic fowl, and birds of prey have also been common subjects of intelligence studies.
The Smartest Dog Breeds You Should Know About John McKeen - Getty Images "Hearst Magazines and Yahoo may earn commission or revenue on some items through these links."
Though these criteria are difficult to measure in nonhuman animals, cephalopods are the most intelligent invertebrates. The study of cephalopod intelligence also has an important comparative aspect in the broader understanding of animal cognition because it relies on a nervous system fundamentally different from that of vertebrates. [3]
No matter if you’re looking to determine if your dog really is smart or if you’re looking for a furry friend who will be easy to train, The American Kennel Club can help. Their list of the ...
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