Are there any bears or lions that are not lying?
No, there is a lion but it is lying.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of    3
2     0   to the left of    7
3     0   to the left of    8
4     1   to the left of    9
5     3  to the right of    0
6     3   to the left of    5
7     3   to the left of   11
8     3   to the left of    7
9     5  to the right of   11
10    5  to the right of    3
11    5  to the right of    8
12    7  to the right of    8
13    7               of    7
14    7  to the right of    3
15    7  to the right of   11
16    7  to the right of    0
17    8   to the left of    5
18    8   to the left of   11
19    8  to the right of    0
20    8   to the left of    7
21    9  to the right of    1
22   11   to the left of    5
23   11   to the left of    7
24   11  to the right of    3
25   11  to the right of    0
26   11  to the right of    8