Are the animals goats?
No, there are both sheep and goats.
    src        edge_attr  dst
0     1   to the left of   20
1     1   to the left of   17
2     1   to the left of   10
3     1   to the left of    4
4     1   to the left of    7
..  ...              ...  ...
79   20  to the right of    1
80   20  to the right of    3
81   20  to the right of    8
82   21  to the right of    3
83   21  to the right of    8

[84 rows x 3 columns]