Here's a purebred Catahoula:


I see a bigger possibility of the dog being a Catahoula/Lab mix, than it having any Australian Shepherd.. O_o I see no Aussie in that dog, except maybe just the COLORS.... The dog's dense coat may be from the Lab part of him, as Labs have a dense coat to protect against cold water when retrieving in the water.

You can see how the Lab's coat is a little longer than the Catahoula's...

Anyway, that's just my opinion..
Whatever Freckles is, she sure is a cutie! I love her smile. She always looks so happy.