I was gonna chime in on the supervision thing too. You can have the most socialized, well trained and well behaved dog and things can happen. Doesn't even necessarily have to be aggressive behavior. I have 2 large Collies, who are extremely friendly, but I don't leave them alone with Small Children or my lil' Cairn Terrier, unsupervised. I don't think they'd ever bite, although as Dixieland Dancer mentioned, you never really know, until they're pushed to their limit. I'm more concerned with just over zealous play mainly though.

I know with Oz, I had him out at a lake with my 5 year old nephew. Oz was standing near Kyle and Oz just made a turn next to Kyle and knocked Kyle right on into the lake. Luckily we were right there and fished Kyle out. Big dog, lil' kid, you just never know what can happen unintentionally.

With my Cairn, I just worry about him getting stepped on, if the Collies start playing and I'm not there to pick him up out of the way. They all 3 get along wonderfully, but again Big dogs, lil' dogs, they can easily hurt the lil' dog without even meaning to. When they're playing, they just aren't focused on where the lil' dog is in relation to their big ole paws.

Also, you may want to have Max and Daisy initially meet on neutral territory, that can help new meetings be more successful.

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