I stayed like this for a short moment (their faces were so funny!) before slowly transforming into a twoleg again. I couldn't talk their language in my natural form and, since they were probably going to ask me a lot of questions, I had no choices but to be in a form in which I could answer them.
Not to mention I didn't fully trust them yet: I knew they wouldn't be as quick to kill me if I looked like a member of their species as if I was in my normal body.
As always, morphing into a twoleg wasn't pretty – not that morphing could be pretty, anyway. It didn't follow any specific order and, just to make things even weirder, it was never the same "steps". For this transformation, the first thing to change were my four hooves - briefly making me worried I would break a few bones since twoleg hooves weren't made to support the weight of a buffalo – soon followed by my head (and, sadly, my buffalo vision); then my tail disappeared (booo!), the legs switched to their twoleg form and, finally, whatever remnants of my normal body was still left turned into their twoleg equivalent.

I turned toward the friendly twoleg and did my best impression of a smile – twolegs considered it to be a sign of thankfulness.
" Again, you don't have to feel bad for what you did that day. You did what you had to do to protect your herd. However, before you went away, you protected me as if I was part of your herd. The only reason I am still alive today is because you helped me. You should be proud of what you did, not feel bad about it."
Even if I could see Cassie still had regrets, I ended my speech. She was obviously happy I had survived and I knew I lacked the experience in twoleg conversation to convince her she should be proud instead of having regrets. At best, I wouldn't change anything and, at worse, I would say something wrong and make her feel even worse.

"How did you find us?" Their leader asked me.
"Can you tell what happened to me? I'm not as smart as you humans but I know it's not normal for a buffalo to turn into other animals." I asked the friendly twoleg while ignoring the herd's leader – he wasn't my leader and, since he was probably seeing me as a mere nuisance, I didn't see the point of helping him.
"Hey, listen. I know you're confused about all that but you have to answer me. How did you find us?" Again, apart a quick glimpse at the herd's leader, I ignored him and, instead, waited for the friendly twoleg to answer.
"Hey! I don't care who you are but will you answer NOW!"
To be honest, I wasn't surprised that the calf who had just shouted angrily me was the same calf who strongly argued for my death. Even if I hadn't stayed very long with the friendly twoleg's herd, I knew she could be quite aggressive and was quick to attack. But, fortunately, my observations had taught me how to deal with angry twolegs and how to make them stop talking.
Just like I had seen so many twolegs do, I closed my left twoleg hoof and pointed the back of it toward the angry twoleg. Then, without looking at her, I slowly raised the longest finger; thought I didn't know the exact meaning - mostly because the signification was so secret even mothers refused to explain it to their own cubs – I knew it was used to tell someone to stop talking.

I was slammed on the wall.
" Answer. The. Fucking. Question."
Damn twoleg eyes. Thanks to them, I hadn't seen the calf approaching me before her attack.
But this wasn't the right moment to rant about the twoleg's vision. Right now, I was attacked in my twoleg form and, even if I had seen a few combats on the TV, I had never been in an actual combat as a twoleg nor was I particularly strong in this form – compared to my real one, that is.
Which meant I didn't have the choice: I had to turn back into myself. Sure, I would be very vulnerable during the transformation part but, as long as I stayed twoleg, my chance of winning any kind of combat was virtually null – not to mention I would rather die as myself than as a twoleg.

"Oh, don't you dare demorph!"
I knew it. The young twoleg calf wanted to attack me.
Honestly, I didn't want to fight against her. Not because I was afraid to lose (no twolegs can even hope to win against a buffalo during that kind of fight) but because I knew I would injure her; even if I tried to be gentle, I was too strong for a young calf like her and, since she was part of her herd, I knew it would make Cassie sad.
But still, I had to continue. If I wanted to have any chance to defend myself against another twoleg, I had to be in my normal form: I was simply too inexperienced to fight as a twoleg – and, with some luck, having to face a buffalo might dissuade Cassie's friend from…

"You two, stop fighting. " Cassie said after placing herself between her friend and me – effectively preventing any of us from attacking the other. "Everyone else, just calm down."
She turned toward me and waited until I had finished demorphing – which didn't took very long since I was practically finished by then.

"Listen, I know you're worried about your… herd." Cassie said, almost looking like my herd wasn't something we should talk about. "But I'm worried about my herd too, you understand?" I moved my head up and down to show Cassie I understood her. If I were in her position, I would want to get answers as soon as possible too.
"Remember how my herd was attacked when we met? The... the herd that attacked us mustn't know we're humans. That's why we have to know how you find us. We must be sure the other herd can't do the same."
She made a few steps toward me and smiled.
"So, please, tell us how you found us. It's really important for my herd to know that."
Again, I moved my head up and down a few times. I wanted Cassie to know I would tell everything she wanted to know before I demorphed – I knew it would take a while before I would be a twoleg and I didn't want her to worry in the meantime.
I would, however, need to ask her not to take too much time to ask the questions. I had transformed so many time today I was surprised I hadn't fell asleep in front of the twoleg herd; thought I would become a twoleg for her, I wouldn't do it a second time before a good nap.
Not that it would be a problem, anyway. If I didn't have the time to answer every questions, nothing prevented me from going back to my meadow, sleep for the Dark and come back to talk with Cassie as long as needed the next Sun.
I snorted in the direction of the calf who tried to attack me – just for good measures – and focused on my twoleg form.

"No, wait. Don't morph for now. There might be a way for you to talk even when you're a buffalo." She said as the first changes began to appear.
I stopped morphing and slowly returned to my usual form. Whatever she would tell me to do, I would. I knew I could trust her. Unlike the others, she wanted to help me. She wouldn't get rid of me unless it was strictly necessary for her herd – which was very unlikely to happen since the mean twolegs weren't around and I had no intention to threaten her herd.
Not to mention being able to talk to them without having to change into a twoleg could be very useful.

"Ax? Do you think he can use thought-speak?" She asked the deer-twoleg only to sight before anyone answered her.
"Hey, remember the voice you heard in your head when one of us threatened you?" She asked after turning toward me.
I nodded, puzzled. Was this why I hadn't heard anyone answering her? Had she heard that voice in her head without me hearing it?
"It's called thought-speak" She continued. "That's what we use to talk to each other when we change into other animals. We're not sure about it, but it's possible you could use it too. Do you want to try it?"
I nodded.
"Ok, so just… direct your thoughts at me.

Do you hear me?
I wasn't really sure how to "direct" my thoughts. Was merely thinking sufficient? Was I supposed to imagine my thoughts "traveling" toward her or just imagine I was talking to her – using thoughts instead of a voice?
Anyway, since Cassie hadn't answered me, simply thinking of what I wanted to say wasn't the good way to do it.
Hello?
No answers. Clearly, imagining my thoughts travelling to Cassie wasn't the way to go.
Cassie?
Imagining I was talking to her wasn't working either.
Unless I was just unable to use thought-speak for whatever reason; after all, Cassie wasn't even sure if I could use it in the first place. I moved my head left and right – something twoleg sometime do to say "no" – and hoped Cassie would understand.

"You can't do it, can you?"
I did the same movement.
"Maybe he need to be in morph for that." I didn't need to turn my head to see which calf had just talked: it was the one who thought I could only mimic. Glad to see he had finally understood how wrong he was.
"Did you transformed into other animals since we last met?"
I nodded. Sure, apart the deer-twoleg and the twoleg, I had only transformed into a whiteface but it still counted.
"Can you transform into it, now?"
Again, I nodded. Even if I was already exhausted by the numerous transformations I had performed today, I knew I had to do it once time – if only to explain I was too tired to answer their questions and ask if we could continue tomorrow. Using every bits of energy I could find, I focused on the whiteface until, finally, it all stopped: I was a whiteface.

Do you hear me?
No answers. Seem like thinking wasn't the correct way to thought-speak.
Do you hear me?
Again, no answers. Imagining my thought going toward someone wasn't the correct way either.
« You hear me? »
I was starting to get a little worried. If this failed, I had no other ideas of how I could "thought-speak" with the friendly twoleg. The only way to talk with them would be to demorph and transform into a twoleg; something that, sadly, I was too tired to even think about doing – meaning I would have to find a way to tell the young calves I needed a little nap without talking to them.

"Yes, I do. Now, remember you can prevent someone from hearing your thought-speak by not directing your thoughts at that person. So, each time you use it, make sure to only speak with us. If anyone else hear you talking like this, the other herd could understand our herd is mostly twoleg."

« Like this? Anyone hearing me, please speak up. » I "said", making sure to only think at Cassie.
" I hear you." She answered.
I waited a few moments to see if anyone else had heard me.
« Anyone else? » I said – again making sure to talk to the friendly twoleg only.
"Well, seem like you got it." Cassie said once it was clear nobody but her had heard me.
« Apparently. » I said to her before turning toward the herd's leader.

« So, you wanted to ask me some questions, right? » I asked him, making sure the whole herd – and only the herd – would hear me.