Size and form have also been modified by domestication, the wild canary being not more than in.
Domestication has changed the behavior and appearance of cats, but not their digestive systems.
They are docile in disposition, and thus well fitted for domestication.
C. Darwin opened his argument by consideration of plants and animals under domestication.
Little is positively known of the wild stock to which we owe our tame birds, nor can the period of its reintroduction (for there is apparently no evidence of its domestication being continuous from the time of the Romans) be assigned more than roughly to that of the African discoveries of the Portuguese.
