Here's how Arlo losses hope finding his father in Snowdrop's Dino Movie.
[Snowdrop, her dragons, and Arlo continue searching for his father]
Snowdrop: Mr. Apatosaurus?
[Then, Arlo stops and plays on his legs]
Arlo: [sniffs and tears up] We're not gonna find him.
Snowdrop: What are you saying?
Arlo: He's gone. [cries]
Snowdrop: Arlo, don't worry, we'll find your father.
Arlo: [sniffs] Really?
Snowdrop: Cheer up. I know we can find your father. When, I sit alone crying. My mother: Primrose usually comes to me and calms me and down and sings a lulaby she made up.
Arlo: How did it go?
Snowdrop: Okay. Usually....
Primrose: [is on her chair, with Snowdrop crying on her chest while she has her wings around her] Sometimes nightmares just happen Snowdrop.
Snowdrop: I know. But this one is worst! [burries her face into her chest and muffled cries]
Primrose: [stroking her mane] Shhhhhh. Shhhh... Don't cry, sweetie. It's okay, Mommy's here. Mommy's got you. [starts singing] Little filly, bright and brave. Feel the morning warmth upon your face, Celestia brings a new day. [Snowdrop calmly stops and beings falling asleep] Keep your head up. Chase your doubts away. Snowdrop. Filly of frozen tears. Can’t you see the world has so much cheer? For you. My little one.
Snowdrop: [quietly snoring]
Primrose: [tucks her in, and puts Mr. Panda aside her] Sleep well, my filly. [kisses her forehead and leaves]
[They set off, but the T-Rex sees them and follows them]
[soon enough, they are heading to traps]
Arlo: Hey what's this?
Snowdrop: I don't know.
Frostlord: [sniffs one of them and then he picks up a rock and drops it on a trigger plate]
[The axe swings!]
Eaglesight: [pulls Snowdrop out of the way as Arlo ducks]
Snowdrop: What was that?!
Arlo: An axe!
Vinny: Brian, look! There it is! And it's got Snowdrop, Frostlord, and Eaglesight!
Brian; Now we've got him! Charge!!!!
[they hop out of the bush and race towards them]
Astrid: [has her ax ready to strike] GAAAAAAAAAAAAAAHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!
[Arlo starts running then was soon chased by the Nightfuries]
Arlo: Oh, crap!
[Then Brian fells into his own trap!]
Brian: AAAAAAAAAAAAAAAAAHHHHHHHHH!!!!! [thud]
[Then Hiccup gets caught into one of the other traps] Whoa!
Yuna: Go away! Go aw... [she steps on a trigger plate and then she's caught in a net] Whoa!
Snowdrop: Arlo! [runs after him] Arlo!
[Then we see Primrose looking for her]
Primrose: Snowdrop?! [she then sees her running after Arlo and the Human Mane 5 follow]
Snowdrop: Arlo! Arlo, where are you?!
[Eaglesight then tugs her tail]
[we see Arlo in a cage]
Arlo: Snopwdrop, why were you friends trying to get me? I didn't do anything wrong!
Snowdrop: I'm busting you out of here! Eaglesight, give me a hand with this.
[Eaglesight then helps Snowdrop to the top of the cage, and then Primrose and the girls come in and watch everything]
[Snowdrop: [grabs the rope and then begins to undo it as Eaglesight helps her]
[the rope then releases and the cage falls apart]
Arlo: You did it!
[Then gun fire]
Brian: [does indian war call]
Hiccup" We've got it for real now!
[they come racing in, and then they start throwing roipes and chains over Arlo]
Snowdrop: NO! STOP!!!
Yuna: Snowdrop, get out of the way!
[then Frostlord jumps in and roars at them as he stands in front of Arlo]
Primrose: PRINCESS LUNA!!!
Princess Luna: Primrose?
Primrose: What is going on? This is her friend!
Princess Luna: What?
Snowdrop: Please, don't hurt him! He's friend. Arlo's not dangeropus!
Brian: Get out of the way, or I'll blast you with him! [takes out his AMT Hardballier]
Human Rarity: NOO!!!
Brian: [cocks his pistol and points the laser at Arlo's head]
Primrose: [steps in front of her] Stay away from my daughter!
Brian: Listen ma'm, just move your daughter out of the way. Move asside! This dinosaur dosen't derseve to live!
Human Rainbow: [shoots Brian's pistol out of his grip with one of Desert Eagles]
Snowdrop: Thank you!
Human Rainbow: [ruffles her mane] Anytime, squirt.
Human Fluttershy: What's going on?
Brian: Guys, this Apatosaur...
Human Rainbow: She wasn't asking you!
Snowdrop: Brian. Believe me, he's friendly, he's the kindest, sweetest friend I ever had, he hadn't made fun of my blindness.
Yuna: [lets go of her rope] He hasn't?
Bkythe: He said, "Arlo didn't attack Snowdrop or him, or Eaglesight." And I befriended a T-Rex and Velociraptors, so I can trust him. [lets go of her rope]
[Everyone lets go of their ropes]
Brian: Bu.. Bu.. [sighs] [and does the same.]