Is there either any hippo or panda bear?
No, there are no panda bears or hippoes.
    src        edge_attr  dst
0     0  to the right of    1
1     1   to the left of    0
2     3           eating    2
3     3               in    2
4     4   to the left of   13
5     4   to the left of    8
6     4   to the left of    7
7     5               on   13
8     7  to the right of   13
9     7  to the right of    4
10    7   to the left of    9
11    7  to the right of    8
12    8  to the right of    4
13    8   to the left of    7
14    8               on   13
15    8  to the right of   13
16    9  to the right of    7
17   12               on   13
18   13   to the left of    8
19   13   to the left of    7
20   13  to the right of    4