Are the animals of different types?
Yes, they are birds and zebras.
    src        edge_attr  dst
0     1               of    8
1     1   to the left of    5
2     2               of    8
3     2   to the left of   10
4     5  to the right of    1
5     5  to the right of    6
6     5  to the right of    8
7     5  to the right of   10
8     5  to the right of   15
9     6   to the left of    5
10    6            above    8
11    7               of    8
12    8   to the left of   12
13    8            below    6
14    8   to the left of    5
15   10               of    8
16   10  to the right of    2
17   10   to the left of    5
18   12  to the right of    8
19   13   to the left of   17
20   14               of    8
21   15               of    8
22   15   to the left of    5
23   16               of    8
24   17  to the right of   13