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