Are both these animals the same type?
Yes, all the animals are elephants.
    src        edge_attr  dst
0     1   to the left of    6
1     2  to the right of    7
2     2  to the right of    3
3     2  to the right of    5
4     3   to the left of    2
5     3   to the left of    4
6     4  to the right of    7
7     4  to the right of    5
8     4  to the right of    3
9     5   to the left of    2
10    5   to the left of    4
11    6               of    2
12    6  to the right of    1
13    7   to the left of    2
14    7   to the left of    4