Are there any dogs or cats?
No, there are no dogs or cats.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    2
2     2               on    0
3     2  to the right of    7
4     2  to the right of    0
5     3  to the right of    6
6     5  to the right of    7
7     6               on    4
8     6   to the left of    3
9     7   to the left of    5
10    7   to the left of    2
11    7   to the left of    8
12    7  to the right of    0
13    8  to the right of    7