There are two solutions; one on each side of the screen, that would fix that.
1) Describe the creature; don't label it.
DM: You see a small, scaled humanoid with a long muzzle full of teeth and a thin tail.
Player 1: What is it?
DM: ... A small scaled humanoid with a long muzzle full of teeth and a thin tail.
While that's DM 101, any player playing for a while will recognize that as a kobold* and begin the cycle there...
Which can be alleviated by never describing the monster the same way twice, but how many ways can you describe a "kobold"? The wheel can only be re-invented so many times before it ends up a square.
2) And on the player's side, don't metagame.
There's a fine line between "metagaming" and "paying attention."
I wager most adventurers will have heard of monsters like kobolds (which are common and low-power) and know some common traits for them. Any adventurer worth level 2 is going remember something like kobold = traps or kobold = wyrmlings. That's not metagaming. Metagaming would be more like. "Kobolds. They only have 5 hp, so I will run up and have a bunch surround me since I have a high AC, and then the wizard can cast sleep on me since there is no way I can be affected by it without all the kobolds being affected first."
To be honest, I like when my players remember campaign details like kobolds = wyrmlings on their own without relying on me feeding them everything with Knowledge checks. Then again, I've had players who check to see what immunities a daemon has and then turns around and uses acid arrow three rounds later. >_<