It concentrates on the characteristics common to all dogs and tends to ignore the characteristics which vary across dogs, such as color and size and length of hair.
(It; concentrates; on the characteristics common to all dogs) (It; tends; to ignore the characteristics) (It; to ignore; the characteristics which vary across dogs, such as color and size and length of hair) (the characteristics; vary; L:across dogs, such as color and size and length of hair)
It It It the characteristics
concentrates tends to ignore vary
on the characteristics common to all dogs
to ignore the characteristics
the characteristics which vary across dogs, such as color and size and length of hair
L:across dogs, such as color and size and length of hair