The Cenozoic Era.
Dogs did not live during the time of the dinosaurs. There were no known mammals on Earth during that period.
The gestational period for a mammal varies. Smaller mammals tend to have a shorter gestational period than larger mammals.
All mammals present today are example of tertiary period mammals as we are living in tertiary period .
The first mammals appeared in the Triassic Period of the Mesozoic Era, when dinosaurs had already been present for at least 9 million years.
land mammals live on land, sea mammals live in the water.
Marine mammals live in the hydrosphere.
Yes, mammals live in estuarys.
Mammals first evolved during the Mesozoic, the age of dinosaurs. After the dinosaurs died out, the Cenozoic began and mammals diversified until they dominated the land. Currently, we still live in the Cenozoic, so, technically, the Cenozoic could be called "the age of mammals."
Yes. Some mammals live in deserts.
No, they're mammals. Mammals don't lay eggs (except for monotremes).
Yes many mammals live in woods and forests
no...we are mammals