Are the animals of different types?
No, all the animals are zebras.
    src        edge_attr  dst
0     0  to the right of    2
1     0   to the left of    1
2     0   to the left of   10
3     0   to the left of    6
4     1  to the right of    3
5     1  to the right of    0
6     1   to the left of   10
7     1   to the left of    5
8     1  to the right of    8
9     2   to the left of    3
10    2   to the left of    8
11    2   to the left of    0
12    3   to the left of    1
13    3   to the left of    6
14    3  to the right of    2
15    3   to the left of   10
16    5  to the right of    1
17    6  to the right of    0
18    6  to the right of    3
19    6   to the left of   10
20    6  to the right of    8
21    6               on    4
22    8  to the right of    2
23    8   to the left of    1
24    8   to the left of   10
25    8   to the left of    6
26   10  to the right of    1
27   10  to the right of    3
28   10  to the right of    8
29   10  to the right of    6
30   10  to the right of    0