This variant of Teacher Bear is much stronger and has a lot more stamina. However, it moves slower than Teacher Bear, whose speed is already pitifully slow.
Strategy 1: Spam cheap cats, such as Wall Cat and Macho Cat, to stall while you save up money. Send out decent damaging cats with good range and AoE (Area Attack), an example of this is Paris Cat, to kill off all the small enemies. Finally, summon in strong, tanky cats, such as Bahamut Cat to deal the finishing blow.