On which side are the animals?
The animals are on the left of the image.
   src        edge_attr  dst
0    1  to the right of    5
1    1  to the right of    9
2    2  to the right of    9
3    2  to the right of    5
4    3  to the right of    8
5    5   to the left of    2
6    5   to the left of    1
7    8   to the left of    3
8    9   to the left of    2
9    9   to the left of    1