There is a squirrel that has been coming up to the glass sliding door, putting his little nose against the glass and chattering at Dixie. Dixie really wants the pesky thing. I have avoided letting her out to go after it but the squirrel is relentless. I think I am afraid she will actually catch it. Then what? What are the odds that a determined, prey driven 11lb terrier could actually catch a squirrel? Should I let her chase it?