Oh how well I know the frustration I have a 10 month old that has learned how not to grow just stay the same. This gal will eat a medium mouse and wont touch another for 3 to 4 weeks and then again 1 mouse, this process just keeps repeating itself over and over. She has been at 270 grams now for 3 months, Im so ready to pull my hair out if I wasnt already losing it. Her sister is at 340 grams. Oh well I guess thats part of it. Jimi