Collie
VS
Mastiff
Collie vs Mastiff
Compare Collie and Mastiff side by side and get a clear picture of what sets the breeds apart. Explore differences in size, weight, temperament, activity level, and other key traits to more easily decide which breed best fits your lifestyle and circumstances.
Characteristic
Collie
Mastiff
Breed type
Purebred
Purebred
Height
51 – 61 cm
70 – 91 cm
Weight
16 – 34 kg
75 – 110 kg
Life expectancy
14 – 16 years
10 – 12 years
Child friendly
5/5
3/5
Energy level
5/5
3/5
Intelligence
5/5
4/5
Trainability
5/5
3/5
Health
4/5
2/5
Grooming needs
3/5
3/5
Shedding
5/5
3/5
Barking level
4/5
3/5
Aggressiveness
1/5
2/5
Sponsored Ad
Characteristics
Collie
Great with kids
High energy
Super smart
Easy to train
Large
Mastiff
Super smart
Giant
Summary
About Collie
The Collie is an intelligent, medium‑large herding dog with a long double coat needing regular grooming. Gentle, loyal, and sensitive, it bonds closely with family and prefers kind training. Adaptable to town or country, it needs daily mental stimulation and exercise to stay content.
About Mastiff
The Mastiff is a giant, heavily built guardian dog, calm and dignified yet deeply devoted to its family. It is watchful rather than aggressive, needs gentle, consistent training, moderate exercise, and space. Its short coat is easy to maintain, but drool, health care, and costs are significant.
Similar breeds
View more
