Hi, thank you for posting your question. Bitty Pets are so cute! I am sorry to hear that the animation is leaving a trail. The only known issue in the game forums are here http://support.bittypets.com/support/.../188794-can-t-grab-items-when-the-browser-is-zoomed I also played for a few minutes, my name is tootle if you want to be friends. Since it is an image based game and not flash it could be hardware acceleration.

Does this also happen when acceleration is turned off?

Try disabling graphics hardware acceleration. Since this feature was added to Firefox, it has gradually improved, but there still are a few glitches.

You might need to restart Firefox in order for this to take effect, so save all work first (e.g., mail you are composing, online documents you're editing, etc.).

Then perform these steps:

• Click the orange Firefox button at the top left, then select the "Options" button, or, if there is no Firefox button at the top, go to Tools > Options.
• In the Firefox options window click the Advanced tab, then select "General".
• In the settings list, you should find the Use hardware acceleration when available checkbox. Uncheck this checkbox.
• Now, restart Firefox and see if the problems persist.

Additionally, please check for updates for your graphics driver by following the steps mentioned in the following Knowledge base articles:

• Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

• Upgrade your graphics drivers to use hardware acceleration and WebGL

Did this fix your problems? Please report back to us!

Thank you

Thank you and you should look in your account on Bitty Pets as I let my friends know you are new and so helpful so you will get a bunch of gifts in the game

It seemed ok yesterday but today it is back to it again. If I have the habitat at 100 % it is ok but I can not play at that size and when I make it smaller it does the tracking. It is very annoying