Attack is an arcade game mechanic. The DS Game has a similar mechanic, but it is replaced by Power in the TCG, though Power has a different meaning in the arcade.
A dinosaur has three Attack stats, one for each Sign. Two of them are usually the same, and the third is the highest, corresponding to that dinosaur's "critical move", which is the sign displayed on the card. Sometimes the three numbers are close together, while other times the critical move is far stronger than the others, allowing for variation among dinosaurs in an Element with the same Power and Technique. Upon winning a Rock-Paper-Scissors move button match-up with the opponent, a dinosaur will inflict the Attack of the Sign they won with as damage to deplete the opponent's health bar.
Only certain releases of the arcade cards show the three Attack stats, which can lead people less familiar with Dinosaur King to incorrectly assume that the dinosaur's Power/Strength stat relates to their attack (it's actually their health).
- The only arcade waves whose cards show the Attack stats on the front are the Kakushin 1st, 2nd, 3rd, 4th, and 5th Editions, and the armored dinosaurs of these and the following edition only display them on the unarmored/chibi-featuring back side. For reference, the Kakushin Editions are the final grouping of releases, and only have Japanese versions.
- Because of this, only dinosaurs with a card released at some point during this group of waves can possibly have their Attack stats directly known and confirmed, leading to many dinosaur pages listing it as "(unknown)".