My grandmother's labradoodle is insane. She's sweet but she's a kisser and a jumper. She practically knocked me over and my kids (6 and 4) just avoid her. We have a beagle and he is medium sized. About 35 lbs (he's the bigger sized of the breed) and absolutely amazing with the kids. We got him 2 years before our first was born and we have never had one issue with him. He house trained in a week and doesn't even bark much which is weird for a beagle. We had been training him since we got him (when he was 8 weeks old) and I have pictures of both of my kids sleeping on him.