Some supporters of assistance dogs believe the dogs may be appropriate for anyone on the autism spectrum who can cope with an active, lively animal day in, day out for many years.
However some organisations which train and provide assistance dogs are more cautious. They may have specific child age limits and most importantly, will assess the family as a whole for the suitability of having a dog. For example, the charity Dogs for the Disabled states
'Applications for this service can only be considered for children from 3 years of age up to their 10th birthday. The age is set due to the nature of the harness used when working and the resulting welfare of the child and dog.'