Are the animals of different types?
No, all the animals are zebras.
    src        edge_attr  dst
0     0               in    2
1     0   to the left of    1
2     0             near    4
3     1  to the right of    4
4     1  to the right of    0
5     1  to the right of    8
6     3               on    7
7     4   to the left of    1
8     4          next to    0
9     5  to the right of    8
10    8   to the left of    5
11    8   to the left of    1