Hey, I'm not sure if it's just my server but I and my friends are unable to do anything featured in doggy talents besides naming the dog or toggling obey others, or friendly fire. The skill points and textures do not appear whatsoever. Another thing to note is that the mod works perfectly fine in Single-player. I don't think this detail is that important but when I carry a dog with a mod called Carry On, the textures do appear as I hold the dog. The unknown owner issue is relevant on my server.

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!