I'm not seeing the lab. His face is narrow, with eyes wide apart and button? ears. Labs have wider faces and floppy ears. It's harder to tell with puppies, but I can see where the JRT, chihuahua, and border collie guesses are coming from. He's a cutie!
I don't see Chihuahua at all. The eyes are wrong, the head shape is all wrong, the ears are too floppy.
I think it is something about his stare that has so many people guessing chihuahua. Once a dog is mixed, breed features are not going to be spot on. But now that I've seen pictures of him as an older puppy, he has the chihuahua stare. It's kind of hard to explain, but all chihuahua I have met have had that same look on there faces. It's like their faces say, "Why should I care about you to? You don't give me food."
Yeah...my rambling probably doesn't make sense. ^_^;
Anyway...I see chihuahua because of his expresion and Chocolate lab because of the rest of his body.
My guess is mutt, lol. Sorry couldn't help it. This thread proves no one knows what the puppy is. His parents could be a mix of breeds. You can buy a DNA test and find out what he mostly is. The test is done by swabbing his check and then you send it through the mail.
He reminds me a bit of my Chihuahua mix. My guess with mine is Chi/ Daschund and that's my guess for this little guy too. Here's a pic of Bucky as a puppy and then a more recent one. He's about a year and a half now. He's a monster and weights around 30lbs, like the same as my other dog in the picture, Oreo. Your guys face makes me think Chihuahua, well the eyes anyway, and his knees remind me of Buckys.
I don't see lab at all. There are brown and white border collies, I owned one. The pattern of his white would fit for a BC mix, and the coat looks a little bit like my brown/white BC's did when he was a puppy. But without knowing how big he is it's hard to say that for sure.
There is definitely terrier of some form in that puppy, though. Whether it's JRT... or could be Rat Terrier, too.