@Hitogoroshichan
猫の癖に -> Even though I'm a cat
あまり鳴かないとか -> don't mewl much, or
反応薄いとか -> have weak reactions
言われます -> said about me.
"Even though I'm a cat, I've been described as not mewling much or having weak reactions."
そんな私にも -> Even myself who is like that
テンション上がるもの -> something that makes one fired up
があります -> exists.
それは…… -> That is...
"However, even I have something I get excited about. That is..."