In what way does pablo picasso and jacques louis david use animals in their artwork?

They can be used to show the shapes that makeup the creature, making them easier to paint and see for a rough sketch.

Explanation:

For example, see Picasso's "Bull"

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.