Quick answer: On average, male Labradors are a little bigger (roughly 29–36kg) and more openly affectionate, while females are a little smaller (25–32kg), tend to mature earlier and are often described as slightly calmer. The gap is small. Variation within each sex is bigger than the difference between them, so the breeding line and the individual puppy matter more than whether you choose a boy or a girl.
Last updated: October 2026
Prospective owners ask me about male vs female Labs constantly, and most guides oversell the differences. I share my home with three Labradors, Skye, Ziva and Kelsey, and all three are girls, so what I say about males comes from the many I’ve met rather than from living with one. I’ve stuck to patterns that hold up. If you’re still deciding on the breed itself, my Labrador Retriever 101 guide covers the wider picture, and my complete Labrador temperament guide goes into breed-wide personality beyond the male/female split.
Male vs female Labrador at a glance
| Male | Female | |
|---|---|---|
| Height at the shoulder | 57–62cm (22.5–24.5 in) | 55–60cm (21.5–23.5 in) |
| Weight | 29–36kg (65–80 lb) | 25–32kg (55–70 lb) |
| Adolescence (6–18 months) | Often more exuberant and distractible, a touch slower to mature | Often matures a little earlier, so the teenage phase can feel shorter |
| Affection style | Often openly, insistently affectionate | Often a bit more independent |
| Hormones | Intact males may mark and react strongly to females in season | Unspayed females come into season roughly every six months |
The size figures follow the AKC’s Labrador Retriever breed profile. The behaviour rows are tendencies, not rules.
Weigh your puppy, then try the puppy feeding calculator to see a starting portion for their age.
How much bigger is a male Lab?
Males run larger on average, by about 4kg (around 9 lb) across the typical range, but the overlap is real. A large female and a small male can land in almost the same place. If size matters for your household, whether that’s handling, living space or small children, the parents tell you more than sex alone does.
Breeding line matters just as much. Show-line Labs tend to be heavier and stockier, field-line Labs leaner and rangier, and that gap can be bigger than the one between the sexes. My English vs American Labrador comparison covers the build differences, and the Labrador size and growth chart shows where a puppy should be at each age.
Are female Labradors calmer than males?
Slightly, on average, and mostly during adolescence. Males tend to run a bit more boisterous, and the 6–18 month stretch can be genuinely harder with a male: the testosterone surge makes them more distractible and more inclined to test boundaries, and they’re generally a little slower to mature emotionally. Females usually mature earlier, so the same phase often feels shorter.
After that the gap mostly closes. A calm show-line male will be more relaxed than a high-drive field-line female, which is why I’d look at the line before the sex. My guide to English vs American Labrador temperament explains how much energy to expect from each type, and if mouthiness is your main worry, my puppy biting plan works for either sex.
Which sex is more affectionate?
Males are often described as more openly, insistently affectionate, and females as more independent and less constantly attention-seeking. I wouldn’t build a decision on it. The idea that males bond to one person isn’t well supported either: Labs as a breed tend to be affectionate across the whole household, and where a dog does fixate on one person it usually reflects the household’s dynamics more than the dog’s sex.
Male vs female Labrador: pros and cons
Male Labrador
- Pros: a larger, sturdier frame; often openly affectionate; no seasons, bleeding or phantom pregnancies to plan around.
- Cons: adolescence can be harder and last longer; intact males may mark territory and react strongly to females in season, which can hurt recall; two intact males in one home can be difficult.
Female Labrador
- Pros: usually matures a little earlier; often less constantly attention-seeking; a lighter frame, which some households find easier on the lead.
- Cons: an unspayed female cycles roughly every six months, with bleeding, hormonal shifts, sometimes phantom pregnancies and occasionally clinginess or moodiness around a season; the spay decision comes with timing trade-offs (below); serious female-on-female aggression, when it happens, tends to be more persistent.
Spaying and neutering matter more than sex
Whether a dog is neutered at all, and when, tends to shift behaviour more than sex does on its own. A castrated male loses most of the testosterone-driven behaviour: marking, interest in females and some of the tension with other males.
Timing matters too. In a UC Davis study of Labrador health records, neutering before six months significantly increased joint disorders, though the effect was smaller in Labs than in Golden Retrievers. That’s why many vets now lean towards waiting until a Lab is physically mature rather than defaulting to the traditional six-month timeline, and for females, towards waiting until after the first season. Spaying also removes the risk of pyometra, a womb infection, and reduces mammary tumour risk if done before the first or second season. I’m not a vet, so the right timing for your dog is a conversation to have with yours.
If you already have a dog
Opposite-sex pairings generally settle more smoothly than same-sex ones. Two intact males together can be genuinely difficult, and, somewhat counterintuitively, serious female-on-female aggression tends to be both more common and more persistent than male-on-male tension when it does happen. These are tendencies rather than guarantees, but they’re worth weighing if you’re adding a second dog.
How I’d choose
I’ve met plenty of calm, easy-going males and plenty of high-maintenance females, and the reverse just as often. Living with three girls doesn’t make me an expert on males, and I’d rather say so than guess. What it does remind me is that build and temperament come from the individual dog and its line as much as its sex.
If I were choosing for a typical family, sex would be my tiebreaker, not my starting point. A breeder who has watched a litter for eight weeks has a far better read on individual puppy temperament than sex will ever give you. Tell them what you’re after, whether that’s calmer, more driven or more biddable, and let them match you to the actual puppy rather than picking blind by sex. My guide to normal Labrador puppy behaviour is worth a read before you bring either one home.
People also ask about male vs female Labradors
Are male or female Labradors easier to train?
Females sometimes have a slight edge during adolescence because they mature a little earlier, but males generally close that gap once they’re through the testosterone-driven testing phase. It’s rarely a good enough difference to base your choice on.
Do male Labradors get bigger than females?
Yes, on average. Males typically stand 57–62cm at the shoulder and weigh 29–36kg, compared with 55–60cm and 25–32kg for females. A large female and a small male can end up about the same size.
Is a male or female Labrador better with kids?
Neither sex has a clear edge. Individual temperament, training and supervision matter far more. For a family with young children, I’d put the calmest puppy in the litter ahead of either sex, and I’d read my Labrador toddler safety rules before the puppy arrives.
What age should you neuter or spay a Labrador?
There’s no single right age. Many vets now recommend waiting until physical maturity rather than the traditional six months, since early neutering in large breeds is linked to more joint problems. For females, waiting until after the first season is also commonly advised. Ask your own vet, who can weigh up your dog’s size, line and lifestyle.
Do male and female Labradors get along better than same-sex pairs?
Generally, yes. Opposite-sex pairings tend to settle more smoothly, while two intact males can clash, and female-on-female aggression, when it happens, tends to be more persistent than male-on-male tension.
Is it better to get a male or female Lab as a first dog?
Neither is better. What helps a first-time owner most is a calm puppy from a show-line or mixed-line litter, and that matters more than sex. If you’re torn between the breeds as well, my Golden Retriever vs Labrador comparison and my Labrador versus Golden Retriever guide are worth reading.
Do I have to spay a female Lab?
Nothing about the breed requires it. Spaying removes seasons and the pyometra risk, while leaving a female intact means planning around a season every six months or so. Talk through the timing with your vet.