Language distinguishes humankind from the animal.
A human: a thinking animal
A human: a tool-making animal
(language itself is the most remarkable tool)
Communication of animals
Various means of animal’s communication (cries) zvuky differ on important ways from human language.
Cries are not articulate.
They lack the structure given by the contrast between vowels samohláska and consonants spoluhláska.
They lack the structure that enable us to divide a human utterance slovná výpoveď into words.