Soviet space dogs after their rocket exploded 28.5 seconds into the launch on 28 July 1960. Bars was also known as Chayka (Чайка, "Seagull"). Other dogs that flew on sub-orbital flights include Dymka (Дымка, "Smoky"), Modnitsa (Модница, "Fashionable") and Kozyavka (Козявка, "Little Gnat"). At least four other dogs flew in September 1951, and two or more were lost. Laika (Лайка, "Barker") became the first living Earth-born creature (other than microbes) in orbit, aboard Sputnik 2 on November 3rd, 1957. Some call her the first living passenger to go into space, but many sub-orbital flights with animal passengers passed the edge of space first.
Dogs in Mesoamerica deposits differs among sites from various periods. Because of this variation, it is not certain if the function of dogs altered from a food source to that of a religious symbol over time. Besides becoming a meal, dogs were also used as hunting and traveling companions and were scavengers in the home. During a portion of the Preclassic and Early Classic period (1200 BCE through 250 CE), dogs in Cuello, Belize were bred and killed once they reached one year of age. Dog bones had completed epiphyseal fusion and did not indicate the normal pattern of wear like adult dogs