Are all the animals of the same type?
No, there are both sheep and goats.
    src        edge_attr  dst
0     1  to the right of   21
1     2   to the left of   18
2     3               on    8
3     3   to the left of   14
4     4  to the right of   27
5     4   to the left of   14
6     5  to the right of   21
7     6   to the left of   12
8     6   to the left of   24
9     7  to the right of   28
10    8   to the left of   15
11    8   to the left of   14
12    9  to the right of   14
13    9  to the right of   10
14   10   to the left of    9
15   10   to the left of   26
16   10   to the left of   17
17   10  to the right of   16
18   12   to the left of   18
19   12   to the left of   13
20   12  to the right of    6
21   13  to the right of   28
22   13  to the right of   12
23   13  to the right of   24
24   14  to the right of    3
25   14  to the right of   27
26   14  to the right of   29
27   14  to the right of    8
28   14   to the left of    9
29   14  to the right of    4
30   14  to the right of   22
31   15  to the right of    8
32   15  to the right of   29
33   16   to the left of   10
34   16  to the right of   29
35   16  to the right of   21
36   17  to the right of   26
37   17  to the right of   10
38   18  to the right of   28
39   18  to the right of   12
40   18  to the right of    2
41   21   to the left of    5
42   21   to the left of    1
43   21   to the left of   16
44   22   to the left of   14
45   24   to the left of   13
46   24  to the right of    6
47   25  to the right of   28
48   26   to the left of   17
49   26  to the right of   10
50   27   to the left of    4
51   27   to the left of   14
52   28   to the left of   25
53   28   to the left of   18
54   28   to the left of   13
55   28   to the left of    7
56   29   to the left of   14
57   29   to the left of   15
58   29   to the left of   16