Are the animals sheep?
Yes, all the animals are sheep.
    src        edge_attr  dst
0     1  to the right of   14
1     1  to the right of    7
2     3  to the right of   14
3     3  to the right of    7
4     3               of   10
..  ...              ...  ...
67   18  to the right of    5
68   18   to the left of   16
69   18   to the left of   14
70   18   to the left of   12
71   18   to the left of    7

[72 rows x 3 columns]