Activity needs are dramatically different here. The Labrador Retriever has very high energy (5/5) and needs very high exercise (5/5) — think long runs, hiking, or agility courses.

Size is one of the most obvious contrasts between these breeds. The Labrador Retriever tips the scales at 25–36 kg (55–79 lbs), dwarfing the Cavalier King Charles Spaniel's 5–8 kg (11–18 lbs).

If you've spent time around both breeds, the personality gap is unmistakable. A Cavalier King Charles Spaniel greets the world with a affectionate attitude, whereas a Labrador Retriever leans more toward a friendly approach.

The Labrador Retriever has a slight training edge (5/5 vs 4/5). Both respond to positive reinforcement, but the Labrador Retriever tends to catch on a bit faster.

Both breeds cost a similar amount upfront — $1,200–$3,500 for a Cavalier King Charles Spaniel versus $800–$2,000 for a Labrador Retriever. Where the real cost differences emerge is in ongoing expenses.

The Labrador Retriever sheds a bit more (4/5) than the Cavalier King Charles Spaniel (3/5). It's not a night-and-day difference, but if you prefer a cleaner home, the Cavalier King Charles Spaniel has a slight edge.

Both breeds have comparable lifespans — 9–14 years for the Cavalier King Charles Spaniel and 10–13 years for the Labrador Retriever. You can expect a similar length of companionship from either breed, all else being equal.

Both breeds score 5/5 with children, making them equally suitable for families. Either breed would make an excellent family dog.