Your Strength score increases by 1, Your Constitution scores increases by 1, Your Charisma score increases by 2, Your Intelligence decreases by 1.

You are Proficient in Survival, Nature, Intimidation and Perception rolls.

You are proficient with Strength and Constitution saving throws.

Dog years.

Most puppers are Neutral Good or Lawful Good.

Your size depends on you since you can change your size (from small to medium to large) at will.

Your base walking speed is 30 feet.

You have a 1D4 Bite and 1D6 Claw attack. On a successful melee attack, you may use your bonus action to make a claw attack on the same target.

Increase damage at;

Level 5 to Bite 1d6 and Claw 1d8.

Level 7 to Bite 2d6 and Claw 2d8.

Level 10 Bite 3d6 and Claw 3d8.

Level 15 Bite 4d6 and Claw 4d8.

Level 18 Bite 5d6 and Claw 5d8.

Level 20 Bite 6d6 and Claw 6d8.

You take half damage from any attacks that aren't silvered and/or magical. At the start of your turn if you haven't been attacked you gain 1d4+ your constitution modifier of health back. You can only gain this benefit if you have at least 1 hit point.

You can detect opponents within 15 feet by sense of smell. If the opponent is upwind, the range increases to 40 feet; if downwind, it drops to 5 feet. Strong scents can be detected at twice the ranges noted above. Overpowering scents can be detected at triple normal range. When a creature detects a scent, the exact location of the source is not revealed—only its presence somewhere within range.

You can see in non-magical darkness out to 60ft., you cannot discern different colors and can only see in shades of grey and red.

You can attempt to trip the opponent as a bonus action after a bite attack. The opponent must make a Strength Save equal to 10+ your Strength modifier+ your proficiency bonus.

While you are not wearing any Armour or shields your AC becomes 10+ Strength Modifier+ Proficiency Bonus.

You can use thought-speech to speak and you can read Common. You can also bark... because you're a dog.

At level 5 you can hide yourself in an allies shadow. While hiding in the shadow, you cannot move and instead rely on the shadows' owner for movement. You can also perform a short or long rest while in this state. If you enter combat while in shadow camo, you can perform a surprise attack on an enemy adjacent to you. If shadow's owner is attacked while you are inside their shadow, you can use your reaction to jump out and take the hit instead. You cannot perform any other actions while in this state.