The Committee on the Status of Endangered Species, a federal advisory group, has created a list of 340 animals and plants that are in some jeopardy. Here are the categories the committee uses: Extinct  The species no longer exists in Canada.
The front teeth are called incisors, You have four incisors on the top jaw and bottom jaw. the central incisors (the front two teeth) the lateral incisors (the teeth on either side of the central incisors) they have multiple functions. your smile, having a full set of teeth will give you an even smilwe.
Deciduous teeth are now more commonly known as primary teeth. They are also known as baby teeth, temporary teeth and milk teeth. They are the first set of teeth in the growth development of humans and other diphyodont mammals. They develop during the embryonic stage of development and eruptâthat is, they become visible in the mouthâduring infancy.