What's the dog doing?
The dog is running.
   src        edge_attr  dst
0    0  to the right of    2
1    0  to the right of    1
2    1   to the left of    4
3    1   to the left of    0
4    2   to the left of    4
5    2   to the left of    0
6    4  to the right of    2
7    4  to the right of    1
8    7               in    8