Cassie in wolf morph.

"One of Cassie's best fighting morphs is a wolf. The wolf has good speed. Great ripping abilities with the teeth. Terrific endurance. They can run all night."
Rachel to Aldrea-Iskillion-Falan[src]

The wolf is Cassie's preferred battle morph and a morph used by her, Jake, Rachel and Marco. Upon their arrival on Earth in ancient times, the Chee grafted the essence of the Pemalites into wolves, creating dogs in the process.

Originally acquired in The Encounter for traveling purposes, Cassie first used it for combat during The Predator, as she had no other morphs capable to survive in combat. Unwilling to acquire her own unique battle morph, she relied on the wolf during most combat situations, preferring to rely on its agility and the fact that she was not as dangerous as her teammates in morph.

The wolf is also acquired by a handful of morph-capable human-Controllers, who used it during a fight with the Animorphs during The Sacrifice.


"We had first acquired the wolf morphs a while back, when we were on a mission to destroy a Yeerk truck ship."

Two wolves, a male and a female, were treated at the Wildlife Rehabilitation Clinic in 1997. In The Encounter, the Animorphs, minus Tobias, acquired these wolves, with Jake acquiring the male while Rachel, Marco and Cassie acquired the female, as wolf packs could only have one male.


Cassie using the wolf as her battle morph.

"Cassie? We may need you in some more dangerous morph. What have you got?"
"Perfect. But no howling."
Jake and Cassie[src]

After Tobias discovers a Yeerk Truck ship in the mountains, Jake, Rachel, Cassie and Marco used wolf morphs in order to traverse the mountains within two hours, as wolves are endurance runners. As Jake was male and served as their leader, he was the only Animorph to possess a male wolf morph, acting as the alpha of the pack, while the other Animorphs possessed a female wolf morph.

In The Predator, when getting ready for a Yeerk battle, Cassie used the wolf morph as she lacked her own unique battle morph and it was her most powerful available morph at the time. Shortly after, she adopted the wolf as her official battle morph and continued to do so even after acquiring much more powerful animals, as she liked not being able to hurt her enemies significantly during combat, preferring to give them non-lethal wounds whenever possible, although she did make the occasional kill. However, due to the wolf being not that powerful, Cassie would only use the morph when fighting alongside her teammates; in situations where she had to fight alone or was forced to seriously harm her enemies, she would elect to use a much stronger morph, such as the polar bear.

Despite the fact that Jake, Marco and Rachel also possessed the wolf morph, they did not use it very often, especially Rachel. Jake and Marco morphed wolves to track Rachel and flee from the Veleek in The Andalite's Gift, and Jake later used the morph along with Cassie in The Change to rip off the flesh of Jara Hamee and Ket Halpak in order to trick the Yeerks. The four Animorphs also used wolf morphs to survive for 24 hours in the North Pole during The Extreme, as they had no other adequate morphs, and would use it again in The Hidden in order to evade the pursuit of the Yeerks, who were tracking the morphing signature emitting from the Escafil Device.

The wolf morph was also used by a handful of morph-capable Yeerks. While controlling Jake's body, Temrash 114 morphed a wolf to escape his confines, although he was prevented by the other Animorphs. In The Sacrifice, a number of Yeerks, through their morph-capable human host bodies, morphed the wolves to fight the Animorphs and the National Guard, although the latter simply kill them all using assault rifles. The wolf was also briefly morphed by Aldrea-Iskillion-Falan after she possessed and controlled Cassie's body in The Prophecy.


Known Morphers