Are these animals of different species?
No, all the animals are zebras.
    src        edge_attr  dst
0     0   to the left of   12
1     0  to the right of   10
2     0   to the left of    1
3     0  to the right of   11
4     0  to the right of    9
5     1  to the right of    9
6     1  to the right of    0
7     1  to the right of   11
8     1  to the right of   10
9     1  to the right of    8
10    1  to the right of    6
11    3  to the right of   11
12    3   to the left of   12
13    3  to the right of   10
14    3  to the right of    9
15    4  to the right of   10
16    4  to the right of    9
17    4  to the right of    8
18    4  to the right of   13
19    6  to the right of    9
20    6  to the right of   10
21    6   to the left of    1
22    6   to the left of   12
23    6  to the right of   11
24    7  to the right of   13
25    8           behind   13
26    8   to the left of    1
27    8   to the left of    4
28    8   to the left of   12
29    9   to the left of    1
30    9   to the left of    3
31    9   to the left of    6
32    9   to the left of   12
33    9   to the left of    4
34    9   to the left of    0
35   10   to the left of    0
36   10   to the left of    3
37   10   to the left of    1
38   10   to the left of    6
39   10   to the left of   12
40   10   to the left of    4
41   11   to the left of    6
42   11   to the left of   12
43   11   to the left of    1
44   11   to the left of    3
45   11   to the left of    0
46   12  to the right of    6
47   12  to the right of    3
48   12  to the right of   11
49   12  to the right of    8
50   12  to the right of    0
51   12  to the right of    9
52   12  to the right of   10
53   13   to the left of    4
54   13      in front of    8
55   13   to the left of    7