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What the colours meanLow — usually easier to live withModerateHigh or very high — biggest commitment

Compare these dogs
	Rough Collie	German Shepherd	Shetland Sheepdog	Old English Sheepdog
Size
Energy
Exercise
Mental stimulation
Trainability
Learning ability
Sociability
Affection
Shedding
Grooming
Barking
Around children
Around other pets
Suits a flat
Good first dog
Usually lives	12–14 years	9–13 years	12–14 years	10–12 years
Roughly, per year	€1400–2400	€1500–2400	€1300–2200	€1800–3000

Some breeds shed less than others, which people with allergies sometimes find easier to live with. But no dog is completely allergy-free, and reactions vary from person to person.