When you go to pet another animal, your pup may jump in between and push your hand away from the other dog. However, having accidents in the house or going outside the litter box can be a sign of a health issue, so your first stop should be a vet visit to make sure your pet does not need medical attention. A lack of resources, such as only one toy for multiple pets, can cause jealous behavior. Don't give one pet more attention than another. Have at least two of all toys and beds, but remove food-based toys unless supervised. Sometimes, just like people, they can feel insecure, they need individual attention, lots of cuddling, and activities to keep them busy and to keep them from being bored. According to experts, jealous-like behaviors in pets typically suggest boredom or a ploy for attention from their owners. They need individual attention, lots of cuddling, and activities to keep them busy and to keep them from being bored. Sometimes, our pets just want us, and they don’t want to share us with another pet or person.