Sniffers are invisible from the spawn egg and the normal egg. I first saw this on a realm couldn't think of a way to fix it so I created a world and spawned some in and again the sniffers are invisible. I have no texture packs on other than classic and I even removed that and nothing. Tried clearing cashe nothing. I'm not the only one having this issue either as my bf that plays on Xbox and my family that also play on Xbox are having this same exact issue. I can hear the sniffers though and I can even put leads on them so I know they are there just can't see them.