My notebook reminds me of the scene: a dabchick swimming across the mere with a brood of tiny young all aboard and peeping from under the parent's wings.
It's a huge commitment of time, resources and money to bring a litter of puppies into the world and I don't think that anyone who thinks it will be pure fun and profit should be let near a potential brood bitch.
Within three days of birth a brood of young may have been led a distance of almost a mile.
And we know the importance of selecting a brood mare for an heir to the throne.
He sold his business and, with his three sons and then wife, packed up a trailer filled with possessions - and 32 roosters and three brood hens - and headed for Oklahoma.
Like their seahorse relatives, male sea dragons brood the eggs.
You have to consider from whence come your brood stock, the animals you're actually working with.
Cichlids follow a typical developmental pattern but some species brood the eggs in the mouth while developing.
Crinoids are gonochoric and brood their young until the embryo develops into a doliolarian larva or a fully formed juvenile crinoid.
Like ‘matrix’ of course - how else to get from a brood cow to a rectangular grid of numbers?