Are the animals of different types?
No, all the animals are horses.
     src        edge_attr  dst
0      0   to the left of   24
1      0   to the left of   12
2      0   to the left of    8
3      0   to the left of    2
4      0   to the left of   14
..   ...              ...  ...
125   26   to the left of    9
126   26  to the right of   13
127   26   to the left of   17
128   26  to the right of    2
129   26  to the right of   23

[130 rows x 3 columns]