Hey guys. I took my cat to the vet today because I found a small very deep hole on his lower neck area.last night I noticed he was missing fur in that spot but there was no hole. I thought hot spot, but the hole really scared me. The vet said he believes it's a puncture wound but he's an indoor cat so I'm not sure how he could've gotten this? My main concern is that it's getting bigger and deeper... He's acting fine but I'm afraid it may be a spider bite and the vet could be wrong... Any opinions would be greatly appreciated