....and joggers...and any car that's a little noiser....you get the jist.
She's 9 months old and always had a thing about bikes but the rest is quite recent.
She's a JRT and I know they have a big chase instinct but I'd like to try and get a handle on this if possible.
This happens on lead and off lead although she's not usually off unless I am as sure as I can be we can avoid them.
If a bike goes past then she pulls, barks, whines anything that she thinks might get her closer 
.
Doesn't matter if it's being ridden or walked....