As cute as little kittens are, keep in mind they are like little children, meaning: they are a lot of work! Apart from them being very active and just jumping from one mischief to the next, they are also still very vulnerable health wise.
The immune system of a young kitten starts to change at around the age of 2 months from it’s mother to its own, and is not fully established until the end of the 3rd months. This means, taking a kitten from it’s mother at an age younger than at least 3 month can potentially lead to all kinds of health issues. Out of the blue (pretty much like with your little toddler) they can get fever, diarrhoea, vomiting and infections of the eye or cat flue, just to name the most straight forward ones. Therefore it is vital to observe young kittens daily with monitoring their weight, temperature, their poo and their eating habits. Also, you have to be prepared to give medication by mouth or eye drops. If you don’t have the time or the confidence to do this, go for a kitten at least 4 months old.
Kittens aged 4-
They still will mind, if grabbed from behind, lifted in a clumsy way or chased by a screaming toddler. Therefore, if you have children younger than 7 years old, go for a cat at least 1 year old. It saves you unpleasant surprises, when the cat reacts to rough play from your youngster and it is more reliable to keep the tender bond between cat and child intact.