A video shared on social media earlier this week shows a black and white dog being thrown into the sea below. The dog is then seen swimming back towards the shore. The video was shared on Snapchat and has since been widely condemned on social media.
The man filming the shocking stunt is heard shrieking with laughter.
Falmouth Police have confirmed they have identified the suspects and officers are continuing to work with the RSPCA.
Police tweeted: “We are currently working with the RSPCA and have identified those involved.”
Officers have asked the public to avoid spreading rumours online whilst the investigation is ongoing.
The dog survived the attack and is safe and well.
On Thursday, a police spokesman said: “Police are investigating a report of concern for the welfare of an animal in Falmouth on the afternoon of Wednesday, May 1.
He said: “This relates to a dog being thrown into the sea. The dog has been checked over and is uninjured.
“The investigation is ongoing and enquiries are continuing.
“We ask that people, including users of social media, do not speculate around the circumstances of this incident, or the individual involved.
“We are aware of threats that have been made online would urge members of the public to leave this investigation with the police, and not to take the law into their own hands.”
The RSPCA defines cruelty as “overt and intentional acts of violence” or “neglect” to an animal.
A spokeswoman for the charity said after the incident: “We have been made aware of some upsetting footage showing a dog being thrown off a cliff in Falmouth on May 1.
“We are very concerned about this incident and would like to reassure people we are looking into it.”
“We’d like to thank everyone who has reported this to us so far and would urge any eyewitnesses or anyone with further information to ring the RSPCA inspectorate appeal line in 0300 123 8018 to help us with our ongoing investigation.”