Table 2 Clinical signs in dogs with no syrinx, small syrinx, and large syrinx

Unprovoked scratching ^Q2

Sometimes

15.4% (2)

23.1% (6)

20.0% (10)

< 0.001

Often

23.1% (3)

23.1% (6)

54.0% (27)

Always

7.7% (1)^a

0.0% (0)^a

12.0% (6)^b

Scratching neck or shoulder ^Q3

Yes

23.1% (3)^a

42.3% (11)^a

78.0% (39)^b

< 0.001

Unilateral scratching ^Q4

Unilateral*

0.0% (0)

0.0% (0)

4.1% (2)

0.015

Right side

27.3% (3)

17.4% (4)

30.6% (15)

Left side

9.1% (1)

13.0% (3)

18.4% (9)

Bilateral

0.0% (0)^a

13.0% (3)^a

26.5% (13)^b

n = 11

n = 23

n = 46

Phantom scratching ^Q5

Yes

30.8% (4)^a

23.1% (6)^a

57.1% (28)^b

n = 49

0.011

Aggravation of scratching during emotional arousal ^Q6

Yes

23.1% (3)^a

26.9% (7)^a

59.2% (29)^b

n = 49

0.007

Aversion to touch on head, neck or shoulder ^Q7

Yes

38.5% (5)^a

19.2% (5)^a

58.0% (29)^b

0.005

Signs of neck pain ^Q8

Yes

38.5% (5)

15.4% (4)

38.0% (19)

0.11

Aversion to wearing collar/harness ^Q9

Yes

30.8% (4)^b

3.8% (1)^a

38.0% (19)^b

0.006

Reduced activity ^Q10

Sometimes

7.7% (1)

8.0% (2)

12.0% (6)

Often

7.7% (1)

20.0% (5)

10.0% (5)

0.67

Always

7.7% (1)

4.0% (1)

10.0% (5)

n = 25

Spontaneous vocalization ^Q11

Sometimes

30.8% (4)

50.0% (13)

34.0% (17)

Often

7.7% (1)

7.7% (2)

22.0% (11)

0.35

Always

7.7% (1)

3.8% (1)

4.0% (2)

Signs of headache ^Q12

Yes

7.7% (1)

26.9% (7)

30.0% (15)

0.26

A preferred head posture during sleep ^Q13

Yes

0.0% (0)^a

15.4% (4)^a

36.0% (18)^b

0.011

Disrupted sleep ^Q14

Yes

30.8% (4)

26.9% (7)

30.0% (15)

0.95

More nervous/ aggressive ^Q15

Yes

38.5% (5)

30.8% (8)

30.0% (15)

0.84

Withdrawing from humans ^Q16

Sometimes

7.7% (1)

7.7% (2)

12.0% (6)

Often

15.4% (2)

7.7% (2)

22.0% (11)

0.10

Always

0.0% (0)

3.8% (1)

4.0% (2)

Withdrawing from other dogs ^Q17

Sometimes

30.8% (4)

26.9% (7)

22.0% (11)

Often

0.0% (0)

3.8% (1)

26.0% (13)

0.36

Always

23.1% (3)

19.2% (5)

14.0% (7)