Are the animals of different species?
No, all the animals are zebras.
    src        edge_attr  dst
0     0             near    6
1     0               in    1
2     0  to the right of    5
3     0          next to    6
4     0  to the right of    6
5     3               in    1
6     5   to the left of    0
7     6          next to    0
8     6               in    1
9     6   to the left of    0
10    6             near    0