Are the animals of different species?
Yes, they are birds and cats.
    src        edge_attr  dst
0     0             near    5
1     0               on    9
2     1             near    5
3     1   to the left of    4
4     1   to the left of    2
5     1   to the left of   10
6     2             near    5
7     2           behind    5
8     2   to the left of    6
9     2  to the right of    4
10    2  to the right of   10
11    2  to the right of    1
12    3               of    5
13    4               of    5
14    4  to the right of    1
15    4   to the left of    2
16    5             near    2
17    5      in front of    2
18    5             near    0
19    5             near    1
20    5      in front of    6
21    5       looking at    0
22    5   to the left of    6
23    6  to the right of    5
24    6  to the right of    2
25    6           behind    5
26    7  to the right of    8
27    8   to the left of    7
28   10   to the left of    2
29   10  to the right of    1
30   11               of    0