Last night I moticed that Jackie has developed what looks to be a blister? Right where the bottom front of his harness rubs against his chest. Any suggestions on treatment/prevention? Do I need to bring him to the vet ASAP?
Does look like a rub mark. If that's all it it then it doesn't need vet attention. Just a change of harness. You could always send the pics to your vet if you're not sure it's the harness (but if it lines up exactly then that's probably what it is). Well done on noticing it before it got any worse.
