Spar lover...
My doggy would recieve cards from other 'dogs' as well!
(but in our culdesac we are all VERY good friends... a bit like the cats of 'neighbours' always in and out on one anothers houses, and that includes the Dogs!
I also buy my charges Dogs and cats Xmas presents, and will send them a birthday card on their birthday in November!
I dont see a problem with it!
Oh by the way one of the neighbours has a 'stamper' with a poor print and the dogs name to stamp on EVERY card he sends to anyone!