Boydell I P
Animal Medical Centre Referral Services, Chorlton, Manchester.
J Small Anim Pract. 1998 Sep;39(9):448-9. doi: 10.1111/j.1748-5827.1998.tb03754.x.
A puppy was presented with unilateral Horner's syndrome thought to have been in existence since the eyes first opened. No other clinical signs were evidence and the condition was attributed to trauma during assisted birth. All abnormalities resolved spontaneously by 11 weeks of age.