Your Charisma score increases by two, and your Strength score increases by one. 

 Awakened Dogs live slightly longer lifespans than normal dogs, due to the magic flowing through them. An awakened dog reaches adulthood at around 1 year old, and can live to 30 years.

 Awakened Dogs are, like normal dogs, extremely loyal. They tend towards lawful neutral, but their alignment is mostly determined by their master's upbringing.

 Awakened Dogs come in varying shapes and sizes, but they are usually larger breeds. Between 2 and 4 feet tall, and weighing 150-250 lbs.

 Awakened Dogs are swifter than most bipedal races. 

 You can speak telepathically to any creature you share a language with within 60ft, though they cannot respond telepathically unless they can already do so otherwise.

Your teeth are natural weapons, which you can use to make unarmed strikes. If you hit with them, you deal piercing damage equal to 1d4 + your Strength modifier, instead of the bludgeoning damage normal for an unarmed strike.

You gain advantage on any Wisdom (Perception) checks that rely on hearing or smell.

You have proficiency in the Animal Handling and Persuasion skills.

 When you Grapple an opponent, they must make an additional Strength(Athletics) check, or be knocked Prone. The DC for this check is equal to 10+your Strength modifier.Once you use this trait, you can’t use it again until you finish a short or long rest.

This could be a language your former master knew.