Thor has been diagnosed and treated for Lyme flareups several times in the past. The paw favoritism and lethargy have been symptomatic of this issue in the past. The eye discharge and trembling are new. Is it possible these are just additional symptoms of a Lyme flareup?
The shaking seems to have subsided considerably, though the little guy is definitely still not feeling well at all. We came on here to decide if we should rush him to an emergency vet. Given this conversation and how he seems to be feeling slightly better, I think we will wait until morning. When he flares up - I think given his weight and his breed's tendency to drama - he crashes pretty hard. Here's hoping it is something treatable simply and safely for our boy.