Are these animals of different species?
No, all the animals are sheep.
    src        edge_attr  dst
0     1  to the right of    6
1     1  to the right of    3
2     1  to the right of   10
3     1  to the right of    7
4     2             near   10
5     3   to the left of    1
6     3   to the left of   12
7     5  to the right of   12
8     6   to the left of    7
9     6   to the left of    1
10    7   to the left of    1
11    7  to the right of    6
12    8           eating    9
13    8       grazing on    9
14   10          next to    2
15   10           beside    2
16   10   to the left of   12
17   10   to the left of    1
18   12               of   12
19   12           beside    2
20   12   to the left of   13
21   12  to the right of    3
22   12   to the left of    5
23   12  to the right of   10
24   13  to the right of   12
25   13           eating    9