Ok, so I went back to Walmart today and found a couple of harnesses that go with the hat and scarf set that Jadzia and Kira are wearing in the picture.
For those who are interested in getting the hats from Walmart the info on the tags for the harnesses says;
Imported by Walmart Canada
1940 Argentia Road
133 W 25th Street Suite 8E
New York, NY 10001
The label tag inside the harness says; Pet New York
I don't know if this helps anyone but I thought I'd try