Do the dog and the bridge have a different colors?
Yes, the dog is green and the bridge is white.
    src        edge_attr  dst
0     0   to the left of    6
1     1  to the right of   14
2     1  to the right of   17
3     1  to the right of   18
4     1   to the left of    2
5     1  to the right of   15
6     1   to the left of    5
7     2  to the right of    1
8     2  to the right of    6
9     3   to the left of    8
10    3  to the right of   12
11    4   to the left of    6
12    4   to the left of   11
13    5  to the right of    1
14    5  to the right of    6
15    6  to the right of   15
16    6   to the left of    7
17    6  to the right of   18
18    6  to the right of   13
19    6  to the right of    0
20    6  to the right of    4
21    6   to the left of    2
22    6   to the left of    5
23    7  to the right of    6
24    8  to the right of    3
25    8  to the right of   16
26    8  to the right of   10
27   10  to the right of   12
28   10   to the left of    8
29   10   to the left of   16
30   11  to the right of   15
31   11  to the right of    4
32   11  to the right of   13
33   12   to the left of    3
34   12   to the left of   10
35   13   to the left of   11
36   13   to the left of   14
37   13   to the left of    6
38   13   to the left of   15
39   13   to the left of   17
40   14  to the right of   13
41   14   to the left of    1
42   14  to the right of   18
43   14  to the right of   15
44   15  to the right of   13
45   15   to the left of   14
46   15   to the left of    1
47   15   to the left of   11
48   15   to the left of   17
49   15   to the left of    6
50   16  to the right of   10
51   16   to the left of    8
52   17  to the right of   15
53   17  to the right of   18
54   17   to the left of    1
55   17  to the right of   13
56   18   to the left of   17
57   18   to the left of    1
58   18   to the left of   14
59   18   to the left of    6