I am not one for labelling breeds but I would think carefully about a Labrador as an inexperienced owner with young children.
All puppies are bitey, but labs, spaniels and GSDs are up there as generally some of the worst!
Labradors are an extremely mouthy breed, I think this has to be carefully considered if your youngest is only two..
They have a reputation for being slow and lazy because people are used to seeing them fed to death and massively obese.
A healthy Labrador is anything but!
They are a very lively, bouncy, joyous, in your face breed.
Quite a contrast energy wise to your average pug.
A pug is typically low energy, a Labrador definately isn’t!
Yet again I see a poster warning of the dreaded working line..
Nonsense!
There are good and bad breeders in both lines but generally speaking working lines are often, not always, more ‘balanced’ dogs temperament wise and healthier.
Given the choice, I would never opt for a show bred dog where a working line exists!
You can’t have an excellent working dog with a shitty temperament. Particularly in a Labrador (gundog) that needs to work in close range with strange people and dogs.
Working breeders value temperament and health very highly.
You absolutely can have a top champion show dog with an awful temperament...
I know a lot of working bred collies, labradors and spaniels.
None of them NEED to work.
They are all calm in the house and lively outside.
I would suggest that if a working bred dog NEEDS to work and can’t relax you are either over stimulating that dog or it is bred with poor off switch and needs training to calm down and relax.
That was really long winded but what I am basically trying to say is a Labrador is VERY different to a pug so maybe not the best choice and don’t be frightened of the working lines, they are brilliant dogs.