Are the animals of different types?
No, all the animals are horses.
    src        edge_attr  dst
0     0      standing in    2
1     0      in front of   22
2     0   to the left of    1
3     0      in front of   21
4     0           eating    2
..  ...              ...  ...
92   20   to the left of   21
93   21  to the right of   20
94   21           behind    0
95   21  to the right of   17
96   22           behind    0

[97 rows x 3 columns]