Spider is a Halloween limited pet, no longer obtainable as of Update 10 on 11/9/2018. It has a rarity of 1 and a half stars. It has stats of 5 Coin Collection and 70 Agility.
When golden, the Spider's stats are multiplied to 15 Coin Collection and 210 Agility.
When rainbow, the Spider's stats are multiplied to 25 Coin Collection and 350 Agility. Its Rainbow chance is 5%.