Another species of Crocodile, more commonly found in LEGO sets, lives in the LEGO Universe. These are called Attack Crocodiles. Attack Crocodiles are naturally relaxed reptiles, who love to sunbathe and work on their tan. However, they are very territorial and use their infamous Croc-a-Belly Slam attack against enemies. The Crocodile Egg Season lasts from October 18 to October 31, during which time Shouty McBullhorn sells Crocodile Eggs exclusively to subscribed players to celebrate the anniversary of LEGO Universe's release. Players with Crocodile Eggs can summon Attack Crocodiles into battle.
The Attack Crocodile was animated by LEGO Universe animator Toby Cochran. It was designed as early as alpha testing, evidenced by one early screenshot showing an Attack Crocodile in Crocodile Corner. At one point, Attack Crocodiles were intended to eat players who fall into the ocean, behaving like sharks in the released game. Although Cochran animated several sequences for this concept, they were deemed too violent and not included in the final product.