Snowy (character) he is able to understand human language, and communicates with speech bubbles. His verbal responses to various situations include jokes, expressions of fright, and pleas to Tintin to exercise caution. In the early albums he takes an interest in mechanics and geography; in "Tintin in the Congo", he makes biblical references. As a dog, he also sniffs, tracks, chases, and bites. The character of Snowy evolved through the course of the Tintin series. In early works he exchanges dialog with other characters, including animals, and provides a running commentary on the situation. His character then became affected by the introduction
Tintin in the Land of the Soviets in second, colour versions from 1942 onward, he decided against doing so for "Land of the Soviets"; it was the only completed "Tintin" story that Hergé did not reproduce in colour. Growing demand among fans of the series resulted in the production of unauthorised copies of the book in the 1960s, with the first officially sanctioned republication appearing in 1969, after which it was translated into several other languages, including English. Critical reception of the work has been largely negative, with commentators on "The Adventures of Tintin" describing it as one of Hergé's weakest works. Tintin, a reporter for ,