why dogs bark at vehicles

6:06

2:07

2:10

15:06

4:58

14:55

18:48

10:33

9:57

4:13

13:07

10:51

13:05

4:54

00:29

15:41

9:46

6:36

1:14

6:30

1:16:32

12:32

7:25

00:38

6:58

4:33

3:13

7:52

18:52

4:08

1:42

5:30

1:51

19:38

4:24

7:47

8:16

2:22

6:28

2:01

11:07

2:13

6:11

6:19

14:16

00:06

00:29

1:06

8:39

00:25

7:16

6:36

5:20

00:41

8:12

15:06

3:26

27:31

2:01

00:36