One of my horses has swollen lymph glands, I didn't notice it until I gave him a body clip the other day. It's bilateral swelling about the size of a golf ball on either side. He is eating, drinking, defecating, etc. all normally. This is a new horse, he just arrived a week or so ago. He has had more fresh grass than he is used to, he started to get watery stool and I have kept him stalled with only 15 minutes of grazing at a time since then. He was vaccinated with a 5 way, WN and strangles last year, and he's coming up on being due again next month. Any advice/thoughts?