Chihuahua dogs are very loving around kids. However, we don't, recommend leaving the dog unsupervised with children under the age of 6, Due to the unique size of the breed they can easily become injured.
Also due to the size of the dog, kids might feel compelled to handle them in a non gentle manner and can get easily scared or irritated when wrongly treated. So we do strongly recommend to be mindful of the dogs well being in these cases.