Definatley over 1
There are about 210 known distinct human cell types http://en.wikipedia.org/wiki/List_of_distinct_cell_types_in_the_adult_human_body
There are too many to list here.Consult a field guide.Some species are the gray, red, fox, Douglas, flying squirrels..
three
The UK has 25 species, but 3 are extinct. in the related links box below, I posted a link for you to see them.