NAVLE Reproductive

Canine Pregnancy Study Guide

Canine pregnancy management is a critical area of small animal theriogenology that encompasses accurate pregnancy diagnosis, recognition and management of gestational complications, and understanding the normal parturition process.

Overview and Clinical Importance

Canine pregnancy management is a critical area of small animal theriogenology that encompasses accurate pregnancy diagnosis, recognition and management of gestational complications, and understanding the normal parturition process. Normal canine gestation is 64-66 days from the LH surge (or 56-58 days from first day of diestrus), though this can appear variable (58-72 days) when calculated from breeding dates due to the prolonged viability of canine sperm in the reproductive tract.

The NAVLE frequently tests candidates on pregnancy diagnosis methods, fetal viability assessment, recognition of dystocia, and appropriate interventions. Understanding the timing and indications for each diagnostic modality, as well as the criteria for medical versus surgical management of complications, is essential for examination success and clinical practice.

Method Timing Advantages Limitations
Abdominal Palpation Days 21-35 (optimal 28-32) No equipment needed; quick assessment Operator dependent; cannot confirm viability; inaccurate for fetal count
Relaxin Test Days 22-27 post-breeding Pregnancy-specific; differentiates from pseudopregnancy Cannot determine fetal number or viability; false negatives possible early
Ultrasonography Days 20-25 (heartbeat visible Day 25) Gold standard for viability; assesses fetal heart rate; no radiation Inaccurate for counting large litters; equipment dependent
Radiography Days 45+ (optimal greater than 55) Best for accurate fetal count; assesses fetal size/position Cannot assess real-time viability; radiation exposure; requires skeletal mineralization

Section 1: Pregnancy Diagnosis Methods

Multiple diagnostic modalities are available for confirming canine pregnancy. The choice of method depends on the stage of gestation, the clinical question being asked, and the information required.

You've been studying hard

Create a free account to keep reading

Free accounts get 5 articles/day + daily practice question

Join 14,000+ vet students already studying with NavleExam.

No credit card needed — free account takes 30 seconds.

Create Free Account — Keep Reading Already have an account? Log in
or skip signup — just get daily questions

No spam. One question per day. Unsubscribe anytime.

NAVLE Exam Prep Platform

Everything you need to pass the NAVLE

10,000+ Practice Questions
Exam-style with full explanations
Past Exam Papers
Real previous exam questions
Flashcard Mode
Species & topic quick review
High-Yield Study Guides
What's actually on the exam
Start Free Trial → See Plans & Pricing No credit card required to start