Wolves in Minecraft can be tamed to make it follow you around everywhere you go. If your love your Minecraft pet and want to make them actually useful, the Doggy Talents mod is for you. Doggy Talents adds some features that are related to tamed wolves. Here's some of them :

19 unique talents you can give your dog
Dog leveling system
Play fetch with your dog
Dyeable collars and any other fancy collars
Care for your dog with beds, food bowls etc
Track your dogs with radio collars on a radar
Upgraded AI from the wolf
New hunger system, don't worry about your dog dying unnecessary

This is a Forge mod and download links are given below.

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Doggy Talents Mod Mod