Your pet already has a favorite toy. The one they carry around, sleep on, and refuse to let you wash. What if that toy could also help them feel calm when you're not home?

The VivaTails Heartbeat Simulator slips inside almost any stuffed toy, blanket pocket, or pet bed — instantly turning something your pet already loves and trusts into an active source of comfort. No adjustment period, no introducing something unfamiliar. Just the heartbeat, inside the thing they already can't sleep without.

It's also the simplest way to replace a worn-out heartbeat unit from any of our Heartbeat Buddies plush toys, so a beloved companion never has to retire just because the device stopped working.

What's inside:

• 1 × battery-operated heartbeat simulator unit
• Two modes: continuous beat or 8-hour auto-off
• Compact design — fits most standard plush toys with an opening or pocket
• Requires 2 × AAA batteries (not included) — available at any drugstore

Who it's for:

• Pet owners whose animal has a specific beloved toy they already sleep with — and want to add a calming heartbeat without introducing something new
• Owners replacing a lost or broken heartbeat unit from an existing plush toy
• Minimalist pet owners who prefer to add function to what their pet already has rather than buying new items
• Travelers who want to slip a heartbeat device into a familiar blanket or pillowcase to help their pet settle in hotels or new environments

FAQ

What size opening does my toy need? The unit is approximately 5cm × 3cm. It fits most standard plush toys with a velcro flap, zipper pocket, or loose stuffing opening.

Will it work inside a blanket? Yes — tuck it into a pocket or fold it inside a thick blanket. Your pet will feel the vibration through the fabric.

How long do batteries last? 4–8 weeks depending on usage mode. AAA batteries are widely available and inexpensive to replace.

How long does shipping take? 7–15 days to the US and Canada.