Weak legs

Thurs. Oct 29th - We gave him 1000 mL of fluids & ½ a Mirtazapine. We have noticed that when Sam has been lying down for a while his back legs are very weak when he begins to walk. We aren't sure if this is caused by poor circulation or us not giving him his daily glucosamine chondroitin capsules so we started back tonight. Our appointment with Dr. Ruslander is tomorrow so stay tuned for results....same Bat-time, same Bat-channel