Does the tail look thin?
Yes, the tail is thin.
    src        edge_attr  dst
0     4          chewing   15
1     5  to the right of   11
2     5  to the right of    9
3     7   to the left of   11
4     7   to the left of    9
5     9  to the right of    7
6     9   to the left of    5
7    10  to the right of   12
8    10   to the left of   16
9    10  to the right of   15
10   11          between   14
11   11  to the right of    7
12   11   to the left of    5
13   12   to the left of   10
14   12   to the left of   16
15   13   to the left of   16
16   15   to the left of   10
17   16  to the right of   10
18   16  to the right of   13
19   16  to the right of   12