When should I start potty training my toddler? Forget tales of 'wonder children' who were dry at 11 months. Most are around two and many are nearer three before they start to show signs that they are ready. Research shows that bladder capacity increases significantly between the ages of two and three, so most three year olds should be able to hold on and be dry for a reasonable period of time. If your toddler seems to be a late starter when it comes to potty training, you may be reassured to know that the age a child is potty trained is not linked to intellect. Nor does it correlate with other stages of development. For example if a child was an early talker, it doesn't necessarily mean they'll be potty trained earlier.  Also bear in mind that girls are often ready for the potty sooner than boys. If other children seem to be out of nappies but your child isn't yet, don't worry, and don't feel pressurised into starting too soon - 15 per cent of children are not potty trained at three and four per cent are still not trained at the age of four. How will I know when my toddler is ready to start potty training? There are several signs to look out for that show your child is ready for the potty: Staying dry for at least two hours between wet nappies and regular or predictable bowel movements indicate that your child is managing to