Are there either bears or horses?
Yes, there is a bear.
    src        edge_attr  dst
0     0  to the right of    3
1     1               on   19
2     1   to the left of    2
3     2  to the right of    9
4     2  to the right of    1
5     2  to the right of   15
6     2  to the right of   12
7     2  to the right of   21
8     2  to the right of   11
9     2  to the right of   20
10    2  to the right of    6
11    3   to the left of    0
12    5   to the left of   15
13    5   to the left of   13
14    6   to the left of    2
15    7   to the left of   21
16    8   to the left of   14
17    8   to the left of   12
18    8   to the left of   15
19    8   to the left of   11
20    9  to the right of   14
21    9   to the left of    2
22    9  to the right of   11
23   10   to the left of   15
24   10               on   16
25   11  to the right of    8
26   11   to the left of    9
27   11   to the left of    2
28   12   to the left of    2
29   12  to the right of    8
30   12  to the right of   14
31   13  to the right of   15
32   13  to the right of    5
33   14  to the right of    8
34   14   to the left of    9
35   14   to the left of   15
36   14   to the left of   12
37   15  to the right of   14
38   15   to the left of   13
39   15  to the right of   18
40   15  to the right of    5
41   15   to the left of    2
42   15  to the right of    8
43   15  to the right of   10
44   15  to the right of   17
45   17   to the left of   15
46   18   to the left of   15
47   20   to the left of    2
48   21  to the right of    7
49   21   to the left of    2