Hi - that's how our Ruby behaves, we've just introduced a new pup and they're both boisterous together! You can see that Ruby is being careful, however.
Flo is as mad as a box of frogs and jumps up at people and other dogs BUT has been superb with Remy - she seems to instinctively know how to change/moderate her behaviour with a very young puppy.Basically when he plays he can be quite boisterous, he has a habit of jumping up in bigger dogs faces and is very excitable. I have never seen him get aggresive other than this weekend when a poodle at the park decided he was going to pick up Eric's ball, Eric snapped at the poodle and it probably sounded worse than it was but it made me concerned about bringing in a new pup.
If you take a look at my blog diaries http://www.mydogslife.co.uk/category/doggie-diaries/ you'll see a movie of Flo and Remy's first meeting in the entry 'Remy Comes Home' and also a video of them taken the next day in the entry 'Flo and Remy - The first two days'. I'll be doing regular weekly entries if you want to check in on the blog to see how Flo and Remy are doing Eric and Pearl will get along just fineThen take them home and keep Pearl in a play pen initially.