I'm new to github but this is driving me mad. I've replicated this a number of times and I can't figure out how to stop it from happening. When my dog walks through a nether portal, on purpose or accident, there's a very high chance it will disappear and be stuck in the nether portal itself. If I use the radar collar or creative radar, it shows him alive and in the nether. In the nether, using the radar puts him directly on the coordinates of the portal. No response from dog whistle, unable to tp to him or /execute a teleport from him to me. Using /kill does nothing. This seems to happen somewhat randomly with a higher chance for loss of dog than not. I've walked this most recent dog through the nether multiple times without issues, and made no changes before he disappeared. Another disappeared the first time he accidentally got pushed into the portal.

Hey, thanks for taking the time to create this issue and I'm sorry I didn't get round to resolving it. I've not worked on this project for a while and have decided to archive the git repository. Fear not, there is a fork https://github.com/DashieDev/DoggyTalentsNext which might be of interest. I don't expect to be back within the Minecraft community so farewell and happy mining!

What version and mc version are you using?