I wouldn't stress too much - is the garden the only place you can take your son outside? Chances are unless the landlady is very, very good about picking up after him, it's not going to be ideal for your kiddo to be out there with the poop. Honestly I'd just leave the yard to the dog and take the kid to the park or for walks. At his age he's not going to really 'need' to see a bunch of dogs and can't do much with them anyway, he's not going to understand not pulling ears etc. and he's not stable with walking to be able to walk a dog for quite a while. Plus he's right at face level and kids tend to stare which doesn't work well with some dogs.
When you see dogs on the street you can figure out if they're kid friendly or not fairly quickly - we went to a dog show last weekend and there were a few dogs that dragged their owners to see the kids. Other dogs didn't seem to care....
When you see dogs on the street you can figure out if they're kid friendly or not fairly quickly - we went to a dog show last weekend and there were a few dogs that dragged their owners to see the kids. Other dogs didn't seem to care....