How much variation is normal in child development when might you or a parent become concerned about development

3 yrs to 5 yrs, that’s when said child’s Cognitive development is growing to a greater extent, also said parent should be careful about what he/she says around said child, hope this helps :D if not Call me a Weeb (optional)

its b i just took the test and i hit a it was wrong

i think he will be okay, id probably take the dog to the vet just incase