The pen is 3x3(ft) and the floor mats are 2x1 each. So we have a 1x1 square of non-mat floorspace - which the pups seem to prefer much more than the big big pen area.
We think they like the cool marble floor. Sometimes they squeal their tiny heads off (so much so I wish they made puppy pacifiers), and when we let them out they go promptly to sleep on the marble floor.
We let them out a few times a days to exploring around the house. They're getting very steady on their feet already!
Tagar investigating the pups new house.
Notice the 3 pups jostling for place at the non-mat area.
Here's a close up of the jostling pups
Notice the 3 pups jostling for place at the non-mat area.
Here's a close up of the jostling pups