What factor causes the physical traits of Pugadors to exhibit a wide spectrum of characteristics?
Answer
Parents come from different size and structure categories.
The wide unpredictability in appearance stems from the significant size and structure difference between the small, squarely built Pug and the medium-to-large, athletic Labrador.

Related Questions
What is the most widely accepted designation for a cross between a Pug and a Labrador Retriever?What factor causes the physical traits of Pugadors to exhibit a wide spectrum of characteristics?If the Pugador litter leans genetically toward the Labrador side, what physical characteristic might be longer than average?Regarding coat maintenance, what characteristic demands high management for the Pugador around the house?Compared to a purebred Pug (14-18 lbs), what is the primary issue when predicting the adult weight of a Pugador?What personality trait is frequently inherited by the Pugador, often described as a strong desire to stay near its family?Since the Pugador can inherit the Pug’s independent streak, what training approach is required?What health issue stemming from the Pug's influence is characterized by difficulty breathing, snoring, and intolerance to heat?Which parent breed contributes the strong genetic predisposition toward obesity in the Pugador?What mistake might an owner make regarding activity if they only focus on the Pugador's lower energy needs compared to a purebred Lab?