What are the animals in front of the forest?
The animals are bears.
   src        edge_attr  dst
0    0           behind    8
1    2           behind    8
2    2  to the right of    8
3    2  to the right of    5
4    5   to the left of    2
5    8   to the left of    2
6    8               in    0
7    8      in front of    0