Are there any cows that are male?
Yes, there is a cow that is male.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of    9
2     1  to the right of    9
3     1  to the right of    6
4     2  to the right of    6
5     3  to the right of    4
6     3   to the left of    8
7     3   to the left of    5
8     4   to the left of    3
9     5          next to    6
10    5             near    6
11    5  to the right of    3
12    5  to the right of    9
13    5  to the right of    6
14    5             near    9
15    6             near    8
16    6             near    5
17    6   to the left of    1
18    6   to the left of    5
19    6   to the left of    7
20    6   to the left of    8
21    6   to the left of    0
22    6          next to    8
23    6          next to    5
24    6   to the left of    2
25    7             near    8
26    7  to the right of    6
27    8          next to    7
28    8  to the right of    3
29    8  to the right of    9
30    8  to the right of    6
31    8             near    6
32    8          next to    6
33    8             near    9
34    9          next to    5
35    9   to the left of    0
36    9   to the left of    8
37    9   to the left of    5
38    9   to the left of    1
39    9          next to    8