Mammals of Australia introductions of placental mammals into Australian fauna were about (rats), several thousand years ago (dingo), and 200 years ago (many species); the last two were made by humans. Some claims were made about placental mammal fossils from the Eocene of Australia, called "Tingamarra". These claims are based on only one found tooth having some characteristic features of condylarth, and were discussed widely. But both the age and placental nature of these fossils were challenged by other researchers. Monotremes are mammals with a unique method of reproduction: they lay eggs instead of giving birth to live young. Two of the five
That's What Life Is All About was also included in the album That's What Life Is All About. Crosby used the song in his various concerts in 1976 including the London Palladium (June 21–July 4, 1976) as well as promoting the song on television shows such as Parkinson, The Vera Lynn Show, Stars on Sunday and Top of the Pops. The version sung at the Palladium was captured on the album Bing Crosby Live at the London Palladium. That's What Life Is All About "That's What Life Is All About" is a 1975 song by Bing Crosby. The song was originally written by Peter Dacre (lyrics)