This is why the announcement earlier this month that ZSL's London Zoo had succeeded in rearing the first ever captive Lake Oku clawed frog tadpoles and juveniles is so important.
"NGOs can provide the training around small-scale fly rearing practices," says Lewis. "This will help farmers to better utilise waste for the benefit of animal rearing".
In my family we are well past the stage at which smacking the kids would be feasible, not least because the girls could now each hire themselves a good lawyer – but even when they were young, smacking didn't seem an appropriate part of the child-rearing toolkit.
Monogamy's purpose, he believes, is the successful rearing of young.
Related: McDonald 'sto axe deforestation from its global supply chain Cattle rearing in Brazil is a complex process in which cattle are calved, reared and fattened in different locations before arriving at slaughterhouses.
Rodrigo de Jesus Mesa, 63, has a 38-hectare farm mostly used for traditional cattle rearing.
Discipline is a necessary part of child rearing, but there is no reason to assume that discipline has to be enforced through aggression.
She is divorced, with two children, Sophia, six, and William, three, and lives in Lancashire When Al Garthwaite first heard of the Wilds, in 1971, she was a recent graduate of Durham University, living in Oxford, high on the idea of revolutionary politics and "tribal" systems of child-rearing.
So the farmer carries on rearing cows as before.
All parents soon realise how much of child-rearing is improvisation, tempered by exhaustion.
Parenting classes focused on birth and breastfeeding, not child-rearing; general-interest groups were needlessly gendered, such as a music class called "Mommy and Me".
