Trainman

Answer: When Buzz was given to Andy, this made Woody jealous as at the time he was Andy's favorite toy. Then Buzz shows up with pop out wings, karate action, a helmet that opens while making a whoosh sound and a light that made a noise like a laser going off and Andy was spending more time with him and even redecorating his room with Buzz Lightyear stuff. Even the other toys grew to like Buzz quickly. After pushing Buzz out the window in a jealous rage, the others got angry at Woody. When Mr. Potato Head saw Woody over at Sid's house, he felt that Woody deserved it for his horrible treatment of Buzz and hoped that Sid would do something evil to Woody as he does to all toys. At that point, we don't know if we ever see Mr. Potato Head realizing how upset Andy is over losing Woody. The only one who recognizes this is Bo Peep when she sees Andy's mom giving Andy the cowboy hat he always wears.

Answer: The reason the toys stay still in the presence of humans is because they need to keep their existence a secret from them. Animals cannot speak to humans, so the toys don't have anything to worry about when it comes to keeping their existence a secret.

Casual Person

Answer: The film was made for children and to make them think that their toys are real and care about them, I don't think the animals really factor in.

Jack Vaughan