Fido's Ultrasonic Gel is a water-soluble coupling gel used with ultrasonic therapy machines on dogs, cats and horses. It's a professional product, typically found in vet clinics and rehabilitation settings, though owners with home ultrasound units for equine or canine physio also use it. The 2.5L bottle is a bulk size intended for regular clinical use rather than occasional home application.

The gel is a clear green formulation designed to transmit ultrasound waves cleanly between the transducer head and the animal's skin or coat. It's non-irritant and contains an antibacterial agent to reduce contamination during repeat use across multiple animals. Because it's water-soluble, it wipes off skin and equipment easily and doesn't leave a greasy residue in fur.

It's the standard choice where a reliable, no-fuss coupling medium is needed day in, day out. Buyers are usually running an established therapy protocol and want a gel that behaves predictably with their existing ultrasound unit.