Giraffe.

Giraffes are divided into several subspecies because of their variety in geographic locations; Somali giraffs, Maasai Giraffes, Rothchild's etc. all live in distinct locations and rarely interact. You can easily tell them apart by spot color (some are darker than others) and the shape of their spots (some are large and round, others are small and jagged).

They stand as the world's tallest land animal and can grow to about 17 or 18 ft. tall.

Perhaps my favorite aspect of giraffes is their personality (realize the base 'person' so please don't equate this to how they actually feel or act) is similar to that represented in the movie Madagascar -- terrified and jumpy. When hiking, I would sometimes spot a giraffe in the distance, easily at least a mile away, sticking out above the trees. When spotted, the giraffe would stand still and wait, having a look as if it hadn't been spotted. If you then move, even a little bit, though you are a mile away, it'll sprint away. It's pretty amusing.