PROBLEM TO BE SOLVED: To provide compositions for preventing and/or treating cardiovascular diseases in felines with hyperthyroidism.SOLUTION: The compositions comprise from about 0.07 mg/kg to less than about 1 mg/kg iodine and/or from about 0.1 mg/kg to about 1.3 mg/kg selenium. The compositions further comprise from about 31% to about 35% protein which preferably comprises at least about 75% vegetable derived protein.COPYRIGHT: (C)2013,JPO&INPIT【課題】甲状腺機能亢進症のネコ科動物において心臓血管系疾患を予防及び/又は治療するための組成物の提供。【解決手段】約0.07mg/kg~約1mg/kg未満のヨウ素、及び/又は約0.1~約1.3mg/kgのセレンを含む組成物。少なくとも約75%の植物由来のタンパク質を更に31~35%含みことが好ましい。【選択図】なし