Are there any bears or giraffes that are not black?
No, there is a bear but it is black.
   src        edge_attr  dst
0    1  to the right of    6
1    1  to the right of    4
2    2   to the left of    6
3    3   to the left of    6
4    4   to the left of    1
5    6   to the left of    1
6    6  to the right of    3
7    6  to the right of    2