Ivan gets trapped!

Gus left that day and Ivan was really scared that he would never see his new friend again. He tried not to think about it too much and just do his kitten thing till the next day came. So, he checked under the fence to make sure the mean dog wasn't in the yard and then he went home to get something to eat. He tried to cuddle with his Momma, but she just pushed him away and none of his siblings wanted to have much to do with him, so he went back under the fence and curled up under the crates. He figured if he stayed close to where Gus had found him before, maybe he'd be able to find him again. So, Ivan fell asleep alone and lonely under his crate and dreamed of playing tag with Gus and being held and cuddled by Gus's Papa.
The next morning when the sun came out, Ivan woke up hungry and thirsty. After a quick peek under the fence, he ran over to his yard and gulped down some food and water before dashing back to Gus's yard. He chased a couple of bugs and dug in the dirt and tried to climb a little tree, but mostly he was just wasting time till he knew if Gus was coming back or not. The sun got higher in the sky and Ivan heard that funny growly sound that usually meant some big, smelly machine was coming and he ducked back under his crate just to be safe. He heard some funny noises coming from the big building behind his crate and he next thing he knew there was bouncy, snuffly, Gus barreling his way to the crate. They were so happy to see each other! Gus's Momma just laughed at them they were so silly; jumping on each other and pouncing and Gus was dancing and barking he was so excited to see his friend. Ivan was pretty happy too. He was chasing Gus's tail and rolling around in the dirt and letting Gus tote him around. The two of them were just goofy, they were so happy. Gus's Momma watched them playing for a while and then she slowly went back inside the big building leaving the two friends alone. It took Gus a little while to realize his Momma wasn't in the yard. He got a little scared and set Ivan down as he started sniffing out which way his Momma had gone. Ivan watched him for awhile and then he started to follow Gus as he sniffed out his Momma's trail. They followed her scent into the big building, around the men and into a big room where Gus's Momma was playing with a funny machine. Ivan stayed way back but Gus went up and bumped his Momma in the back of her leg. Ivan thought she was going to get all mad at Gus, but she stopped what she was doing and turned off the noisy machine and leaned down to give Gus a big hug. She was really happy that he had come in all by himself to find her. Then she looked over and saw Ivan and she got this funny smile; all soft and happy and Ivan didn't know what to think. She got up real slow and came towards Ivan really carefully so she wouldn't scare him. Gus was watching his Momma pretty close, trying to figure out what she was going to do. He didn't want his buddy getting in trouble because he followed him inside. But no, his Momma wasn't mad at Ivan, she picked him up and cuddled him and snuggled him like she did to Gus, so he knew she liked Ivan too. But then, she did what Gus and Ivan thought was a really mean thing. She put Ivan in a cage!! She gave him food and water, but she wouldn't let him out to play with Gus.
They didn't know what to think. What did Ivan do wrong? Why was Gus's Momma suddenly being so mean after she just loved him so nice? The friends were really confused, but Gus stayed close to the cage all day so Ivan could see him and would know he was there. Ivan just didn't know what to think and since he couldn't seem to figure out how to get out of there, he just made the best of it and got comfy and waited for the other shoe to drop.