PupStartDr. James Chen
Canine Nutritionist
DVM, PhD Nutrition
Dr. James Chen specializes in canine nutrition and preventive health. He has published numerous papers on puppy dietary requirements and growth optimization.
Specializations
Articles by Dr.
Dog Behavior Explained Scientifically: Understanding How Your Dog Learns
Understand operant conditioning, stress thresholds, and emotional states in dogs. Science-based guide debunking dominance theory and alpha dog myths.
Positive Reinforcement Training: The Science Behind It
Discover why positive reinforcement is the most effective and humane dog training method, backed by decades of behavioral science research.
Why Dog Training Fails: 7 Science-Backed Reasons and How to Fix Them
Discover the 7 most common science-backed reasons dog training fails — from inconsistent timing to trigger stacking — and a 7-day reset plan to fix them.
Best Dog Breeds for First-Time Owners
Choosing your first dog? These 7 breeds are known for being trainable, adaptable, and perfect for new dog parents.
Puppy Dental Care: Teething, Tooth Brushing, and Long-Term Oral Health
Everything about puppy dental care from teething relief to tooth brushing routines and preventing periodontal disease for long-term oral health.
What to Feed Your Puppy: Complete Nutrition Guide by Age
A veterinary nutritionist's guide to puppy feeding from 8 weeks to adulthood. Covers food types, portions, schedules, and common mistakes.
Puppy Vaccination Schedule: What Shots Your Puppy Needs and When
A clear puppy vaccination schedule from 6 weeks to 16 months covering core vaccines, boosters, rabies timing, and what to expect after each visit.
Puppy Wellbeing: The Complete Guide to Health, Routine, and Emotional Balance
A complete guide to puppy physical and emotional wellbeing covering health checklists, stress signs, routine architecture, and when to consult your vet.
The Complete Puppy Education Roadmap: A Science-Based Guide From 0 to 12 Months
A science-based puppy training roadmap covering every developmental phase from birth to 12 months, with brain development insights and daily micro-sessions.
The Complete Puppy Training Guide: Week-by-Week Plan
A structured week-by-week puppy training plan from 8 weeks to 6 months. Covers basic commands, socialization, and building a strong bond with your new pup.
Puppy Fear Periods: When Your Brave Puppy Suddenly Gets Scared
Understand puppy fear periods — what triggers them at 8-11 weeks and 6-14 months, how to respond correctly, and what mistakes to avoid during these phases.