Cat & Snow is the 4th stage in Jingle Cat Bell.
At the start, lots of Those Guys will spawn, along with some occasional Doges and Snaches. When the base drops to 99% HP, a boss shockwave will happen and then a Teacher Bear, along with 4 One Horns will come out. Additionally, Baa Baa will also spawn indefinitely for the rest of the battle, one after the other, in groups.
This stage isn't tough but can be for a beginner who doesn't have much firepower. It is recommended to use anti-Red cats that can dish either crowd-control or dish out damage to the One Horns such as Apple Cat, Viking Cat or Swordsman Cat. You can use Pirate Cat too if you need do need more time to kill them.
The Teacher Bear is mainly a support for the One Horns and is not much of a threat. Killing a One Horn or the Baa Baas will also give you more money in order to kill the remaining enemies. Once you kill the One Horns, the Teacher Bear should be no problem.