Try a rabbit suit

After a while of roaming, he stumbles across a giant brown rabbit, and staring at the faux animal he decides to wear it. After taking off the motorized zipper and attaching his own, the unzips the creature and tugs at it's mannequin, sliding the head out first, allowing the rest to easily come out.

Staring into the rabbit's rubbery insides shows him that this suit actually has an area for a penis to enter, already eager he lifts the rabbit suit up and slides his leg into the bunny's, feeling a bit more control of the paw than the macaw causes him to become hard again, sliding his other leg he gets sent into a squatting position by the natural position of the legs. Unfazed by this he slides his dick into the pocket and slides his hands into the rabbit's paws, after getting them situated he flexes them.

Using them like he would normally, he rotates the mask so the hole was above his head and pushes the head on, sliding the gag into his throat, after a few minutes of struggling, he inserts his tongue into the rabbit's, feeling around his new mouth he feels two large Sharp teeth In the front of his mouth. Trying to talk, he feels himself only able to release a timid squeak, using his paw to zip himself up he feels strangely hotter, ignoring the rising temperature, he hops over to a mirror, seeing the reflection of a rabbit mimicking his every move causes him to become erect again, but there is nothing in the front of the suit, not even a small bulge from it. Curious as to why that would be the case he probes around the area before he feels a jolt of pleasure. Even more curious he eventually finds a wet slit, pulling it apart, he realizes that this suit was female! And the rise in temperature was him going in heat! "Oh fuck me!" he thinks to himself, not knowing how right "she" was.