Adolescence is the awkward teenage period between childhood and the adult years (13 to 19 years of age).    Adolescence is the development of young kids. The stage starts  around puberty and last until adulthood.
A gentle giant, the Irish Wolfhound is one of the most expensive dog breeds to buy and own, with an average price tag of $1,800. This family friendly dog tends to get along well with everyone but has a short life span of just six to 10 years.
Maine Coon. This third-most popular breed in 2012 is also the fourth most expensive breed in terms of lifetime healthcare costs, coming in at around $63,683. Ninety percent of those insurance claim expenses are tied to illnessâof which this pet is known to inherit gum, heart, and liver disease, along with hip dysplasia.