Hi solo
My dog - Trolle - used to come and lie at my feet when I meditated. The animals are naturally drawn towards Silence
To have the dog in your lap could of course lead to distractions (very few dogs lay completely still), but if it doesn't seem to disturb you then I guess it is fine. Who knows.....maybe the peace of your dog helps you to go deeper.....
However - if you start to notice that you become dependant on your dog for deep meditation...then better not only meditate with your dog in your lap. One day the dog will not be there....and what then?
Also - when the perception becomes more subtle, you may become aware of the energetic presence of your dog.....and this might disturb you in subtle ways.....
Let's see what others here say about this issue.....
Lucky dog, by the way