Are there any cats or hippoes that are black?
Yes, the hippo is black.
    src        edge_attr  dst
0     0   to the left of   14
1     0  to the right of   15
2     5        on top of    9
3     5  to the right of    6
4     5  to the right of   11
5     6   to the left of    9
6     6   to the left of    5
7     6   to the left of   22
8     6   to the left of   21
9     7               in    4
10    7   to the left of   10
11    7   to the left of    8
12    8  to the right of    7
13    8   to the left of   13
14    8  to the right of   19
15    8          holding   10
16    9  to the right of   11
17    9  to the right of    6
18   10  to the right of    7
19   10  to the right of   19
20   10   to the left of   13
21   11   to the left of    5
22   11   to the left of   22
23   11   to the left of    9
24   13  to the right of   16
25   13  to the right of   10
26   13  to the right of    8
27   14  to the right of    0
28   14  to the right of   15
29   15   to the left of    0
30   15   to the left of   14
31   15   to the left of   16
32   16  to the right of   15
33   16   to the left of   13
34   17        on top of    3
35   17        on top of   17
36   19   to the left of    8
37   19   to the left of   10
38   20  to the right of   21
39   21               of   22
40   21   to the left of   20
41   21  to the right of    6
42   22  to the right of   11
43   22  to the right of    6