Pokemon, I Choose You! - S1-E1
Continuity mistake: When Ash's Pokédex says, "While being trained, a Pokémon usually stays inside its Poké Ball," it does not cover the ends of the fingers on his right hand, but in the next shot, it does. (00:10:13)
Continuity mistake: When Professor Oak and Delia are first seen watching Ash's first battle at the Indigo Plateau Conference, Delia has a person to the left of her, and her hands are in her lap, but in the next shot, she does not have a person to the left of her, and her hands are clasped together. Also, she and Professor Oak are smiling, but in the next shot, they are not. (00:11:46)
The Path to the Pokemon League - S1-E8
Revealing mistake: When A.J. and his Sandshrew walk into a tent, A.J. and his whip clip through the tent. (00:07:56)
Bulbasaur and the Hidden Village - S1-E10
Continuity mistake: When the camera begins panning up to Ash and Brock tending to a Staryu, a saucepan appears from nowhere. (00:10:28)
Continuity mistake: When the doors to the Pokémon Center are opening, a frame changes from grey to white between shots. (00:05:09)
The Water Flowers of Cerulean City - S1-E7
Continuity mistake: When a person says, "Uh, some burglars broke into that store last night," there is a woman with a yellow shirt and brown hair, and a man with a yellow jacket, but in the next shot, the woman has a blue shirt and orange hair, and the man has a blue and cream jacket. (00:04:29)
Continuity mistake: When Oswald begins testing the joystick, there is a button that is green, but in the next shot, it is blue. (00:16:10)
Mystery at the Lighthouse - S1-E13
Continuity mistake: When Pikachu starts jumping upon finding a lighthouse, Ash is to the right of Misty and has a glove on his right wrist, but in the next shot, he is to the left of her and has a wristband on his right wrist. (00:06:33)
Pokemon, I Choose You! - S1-E1
Continuity mistake: When Ash begins leaving Pallet Town, his gloves are short and green, and his right hand is by his right side, but in the next shot, his gloves are long and red, and his right hand is next to his collar. (00:09:25)
Charmander: The Stray Pokemon - S1-E11
Continuity mistake: When Brock stands up from the stool he is sitting on, his left hand is on the table, but in the next shot, it is not. (00:07:01)
Continuity mistake: When Misty says, "Great, just keep it away from me, will ya?" the Poké Ball Ash is holding has one ring on it, but in the next shot it has two. (00:02:42)
Island of the Giant Pokemon - S1-E17
Continuity mistake: When James says, "Look over there!" there is a phone booth with no wire attached to it, but in the next shot, a wire is attached. (00:03:21)
Electric Shock Showdown - S1-E14
Continuity mistake: When Ash picks up the Thunder Stone, his belt buckle is brown and black, but in the next shot, it is instantly grey and black. (00:11:13)
Revealing mistake: When Pikachu meets Puka on the cliff, we are treated to an aerial shot which shows the ocean below. There is sunlight reflecting off the surface, but as the camera moves, the lights pass in front of the two Pikachu on the cliff. (00:07:26)
Revealing mistake: When Ash brings his first piece of meat into his mouth, another one disappears into thin air. (00:09:09)
Pokemon, I Choose You! - S1-E1
Continuity mistake: When Gary is first talking to his crowd, there is a woman with blue-green hair, a pink dress, and a yellow apron to the left, but in the next shot, she is replaced by a boy in a green shirt with brown hair and without an apron. (00:05:11)
Abra and the Psychic Showdown - S1-E22
Continuity mistake: When Ash notices the Saffron City Gym, the buildings in the background change. (00:06:38)
Character mistake: When first showing the tournament from the front, a sign misspells Pokémon Number One as "Pokemon Number One." (00:07:46)
The Fourth Round Rumble - S1-E77
Character mistake: When a poster for the Pokémon League is seen, it misspells it as "Pokemon League." (00:20:22)
Other mistake: When Ash, Misty, and Brock are worried about the cyclone approaching, the edges of Meowth's ears are mistakenly colored tan instead of black. (00:20:08)
Answer: Yes it ran away because Layla hurt its feelings.