How to add values ​​to django queryset?

Question

Django

Good day, there is a task to add values ​​\u200b\u200bto one field manytomanyfield
That is, for example, there is a model dogs, refers to dog
In this dogs, you need to add new
dogs Queryset dogs with dog objects comes to the backend The
question is actually simple - how to add to this queryset, and, respectively, in a db, values?