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But dinosaurs didnât appear until about 230 million years ago. Mammals first appeared around that same time. The first human-like animal, or hominid, dates to about 4.5 million years ago, but modern humans only date back perhaps 60,000 years.And recorded civilization has lasted only about 5,000 years.ammals first appeared around that same time. The first human-like animal, or hominid, dates to about 4.5 million years ago, but modern humans only date back perhaps 60,000 years. And recorded civilization has lasted only about 5,000 years.
The Soviet Union stunned the world on Nov. 3, 1957, with the launch of Sputnik 2. On board the small satellite was a little dog, Laika, the first animal to orbit Earth. However, Laika was not the first animal in space. The United States and the U.S.S.R. had been putting animals atop rockets since 1947.Laika, a mixed-breed dog, was the first living being in orbit.he first mammal in space was Albert II, a Rhesus monkey. Albert I's mission had been unsuccessful, but the second Albert reached a distance of 83 miles on June 14, 1949. Albert was anesthetized during flight and implanted with sensors to measure his vital signs.