All-electronic designs based on the video camera tube, such as Vladimir Zworykin's Iconoscope and Philo Farnsworth's image dissector, supplanted the Baird system by the 1930.
This influence on human society has given them the sobriquet "man's best friend".
The father of a litter is called the sire, and the mother is called the dam.
The process of birth is "whelping", from the Old English word hwelp; the modern English word "whelp" is an alternative term for puppy.
This semantic shift may be compared with in German, where the corresponding words Dogge and Hund kept their original meanings.
The term *ḱwon- may ultimately derive from the earliest layer of Proto-Indo-European vocabulary.