Pet thefts and attempted dog snatches have been reported around the Isle.
Numerous reports on social media have warned of pets being taken across North Lincolnshire and South Yorkshire. A white van has been linked to incidents in a number of cases.
Mandy Lythe of the Isle Animal Rescue is keen for people to be aware of the potential dangers.
And Pauline Sharpe of the Field of Dreams Dog Training School sent warnings out after a member reported an attempted snatch of her dogs in an exercise field by two men.
Pauline said: “It was only when one of the dogs went mad barking and she heard screaming and shouting that she realised they were there.”
The men were in a white van. Pauline added: “We assume one of the men had a bite as material was in the dogs mouth. They fled back to the van and sped off.
“It was clear they were up to no good, as they didn’t hang about. In view of the amount of dogs being stolen, it is vital to remain vigilant.”
It was the second time the field had been targeted. It is thought that the men had planned to open the gate and grab dogs as they ran out.
Other reports include accounts of dogs being snatched from owners in public places.
One Bichon Frise, said to have been taken from its owner while being walked on a lead, was dumped a few weeks later then reunited with its owner covered in wounds, presumably after being used for baiting.
Thefts of dogs are also reported from homes and gardens.
A Humberside Police spokeswoman said they had no crime pattern linked to incidents but that any suspicious behaviour should be reported to police as soon as possible on the 101 number.