My 12 1/2 year old golden is having a hard time walking. She's been in one spot for 3 days now and only gets up to go to the bathroom and we have to carry her out to do that. I've started giving her aspirin twice a day and that seems to help her a little. I've ordered some glucosamine/chondroitin and hoping that will help but in the mean time I've noticed she seems to have labored breathing and when she actually walks two difficult steps she breathes very heavily as though she just ran a mile. There has been no coughing, but I'm wondering if this is her heart. I've also noticed her one eye has been running quite a bit. Do dogs catch colds? Lots to work with here. I'd appreciate any thoughts. Thanks