Any ideas what this could be? DD’s horse moved fields last week and since the first 24 hours or so he’s suddenly started breathing much faster than normal. The bet happened to be on the yard soon after it started and had a look at him and thought it was probably tummy ache from eating too much grass. His lungs and airways all sounded fine, no temperature, heart rate a bit faster than normal but not crazy, he seems perfectly happy and is moving beautifully - no signs of lameness or soreness anywhere. He’s pooing and weeing normally (poo is definitely green grass poo but isn’t sloppy) but he is farting a LOT ... we’ve kept him in a couple of nights since and he’s been fine in the mornings when he gets turned out. However, he’s been out for the last two nights and the breathing’s not getting any better. We’ve got him in tonight and tomorrow he’s going out in a bare-ish paddock and if there’s no improvement we’ll obviously call the vet back, but I was wondering if anyone’s seen something like this before?