I have two 2 year old male degus and I have recently discovered that one of them has a bald spot about 1/3 of the size of his back leg... after doing some research online it looks like he could have ticks... but my question is, wouldn't they both have them? What is the treatment for ticks? Does the treatment harm the degus if they dont have ticks? Maybe it's just their wheel rubbing and I'm freaking out for no good reason?

I can also give pictures tomorrow if needed


:-/