What are the conditions of obstructed labour in dogs

Insufficient contraction of the uterus: primary and secondary, primary is common when only one or two pups are carried, when there is insufficient stimulation of the mother’s labour, or when there are too many litters, resulting in overexpansion of the uterus. This is followed by a combination of genetic factors, nutritional imbalances and old age. Secondary to obstruction of the birth canal, the uterine muscle is overexerted and exhausted, resulting in abortion.2. Obstruction of the birth canal: maternal factors causing obstruction of the birth canal include uterine torsion, uterine rupture, uterine transposition, uterine malformation and pelvic stenosis.3. Fetal obstructed labour: both refers to obstructed labour caused by fetal anomalies, which can easily occur if the fetus weighs more than 4%-5% of the mother’s body weight and is commonly seen in small fetuses It is common to see small litters, especially in small dogs. There is also a large size difference between the male and female dog (usually the male is larger) making the foetus too large for the female to deliver.