A large dog stands over a smaller dog who has its mouth open.
They are fighting
Just because a large dog stands over a smaller dog doesn't mean they are fighting.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5.(over(e1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_have(e2) & n_open(x4) & of(x4,x5) & n_mouth(x5) & of(x4,x1) & n_thing(x1) & (x2 = x3) & n_dog(x2) & r_more(s2) & a_smaller(s2) & Theme(s2,x2) & Actor(e1,x1) & v_stand(e1) & n_dog(x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1.(n_thing(x1) & Actor(e1,x1) & v_fight(e1))