Around here, there are almost no fleas. I've been living here since '07 and haven't seen one yet.
Instead of rabbits, it's the squirrels that tease the dogs. And cats! My grandson's cat will sit in the window and watch the squirrels playing in the yard. His tail is 'swishing' back and forth. He would love to get out there. The squirrels occasionally will sit just outside the window and turn their back to the cat, then swish their tails up and down. That's when the cat seems to come unglued!
My little chi/terrier will be laying on the bed, looking out the back door. She'll see a squirrel and want outside. Just bouncing up and down at the door. I'll let her out at times. Not much chance of her catching one of the squirrels, but I know if she does, it'll probably be the end of her! I watched, about a week ago, a squirrel on a tree trunk, facing downward, watching the dog. The dog knew she couldn't quit reach the squirrel, so she just stood and watched with her ears sticking straight up. The squirrel was looking at her like, 'you want a piece of me?'. He was swishing that tail and chattering at her. When he started chattering, she put her feet onto the tree trunk and growled. I think the squirrel got thrill out of her growling at it.!