What does the dog wear?
The dog wears a collar.
    src        edge_attr  dst
0     0  to the right of   11
1     0  to the right of    6
2     0  to the right of   12
3     0  to the right of    7
4     0  to the right of   20
..  ...              ...  ...
63   21  to the right of    3
64   21  to the right of    6
65   21  to the right of    4
66   21  to the right of    5
67   23   to the left of   19

[68 rows x 3 columns]