I would like to know,why My little dog bites me all the time strong and she is not understood that she does not do it . so hard or for anything sometimes just for see my hands is thrown to bite
We could think of an mouth problem when you tell us the case and the age of your dog. So that you should take her to the vet. If the vet checks her and your dog is healthy then she could be stressed or bored due to lack of activity when she stays alone during hours at home. Also it could be a separation anxiety because she bites when she is alone but he does not bite when she is with you.
Therefore, we recommend you to contact a behavioral specialist (clinical ethologist) so he/she can personally assess These problem, determining a diagnosis and appropriate treatment guidelines, because the treatment would be different in both before cases.
At the moment, it could be good if you can create some routines, especially when you walk with her for long time and including different activities.
All the best,