Do these animals have different types?
No, all the animals are elephants.
    src        edge_attr  dst
0     0  to the right of   14
1     0  to the right of   16
2     0  to the right of   13
3     0   to the left of    5
4     0   to the left of    4
..  ...              ...  ...
87   16   to the left of   14
88   18  to the right of    6
89   19  to the right of    6
90   19  to the right of    0
91   20   to the left of    6

[92 rows x 3 columns]