Why is my unspayed dog suddenly aggressive and hiding with toys?

She could be having a false pregnancy but that would be extremely unusual in a 6 month old puppy. This could be an indication that she has a severe hormonal issue. I suggest you get her to the vet for an exam. You need to get his under control as soon as possible before he actions turn into serious aggression.

If she is not spayed, this could be a false pregnancy symptom: https://www.petcoach.co/article/false-pregnancy-in-dogs/ It could also be anxiety or just Pepa just REALLY likes this toy. I do recommend to spay all dogs not intended to breed as this is beneficial for health: https://www.petcoach.co/article/spaying-ovariohysterectomy-the-benefits-in-dogs/ I hope this helps.

If you dog is an unspayed female, she could be pregnant or having a false pregnancy. According to petMD, false or pseudopregnancy "is a term used to denote a common condition in a non-pregnant female dog that is showing symptoms of pregnancy, lactation, or nursing, without producing puppies. The affected female dog shows these symptoms about a month or two after her estrus (heat) is over. A hormonal imbalance is thought to play a central role in affected female dogs. Depending on the severity of problem, the symptoms may last for more than a month." Affected dogs may display behavioral changes, including restlessness, nesting and mothering activity. Regardless of whether she is spayed or unspayed, it is important that you have her examined by a veterinarian to rule out underlying medical causes, with symptoms such as pain or discomfort, for her behavioral changes. http://www.petmd.com/dog/conditions/reproductive/c_dg_false_pregnancy

Hi, thanks for using PetCoach! Diamond is adorable! That tongue!! I wonder, has Diamond had a heat cycle recently? She is exhibiting signs that are consistent with a false pregnancy. This is a hormonal imbalance that occurs after a heat cycle that causes the female to think she is pregnant when he actually isn't. The dog will develop mammary glands and even make milk, they nest, pick up toys and carry then around like babies, more clingy to owners, anxious. A false pregnancy lasts about as long as a normal dog pregnancy or a bit longer, 2 months or more. The symptoms can return on subsequent heat cycles, so I recommend spaying once the false pregnancy symptoms go away. http://www.merckvetmanual.com/reproductive-system/reproductive-diseases-of-the-female-small-animal/false-pregnancy-in-small-animals?network=g&matchtype=e&keyword=false%20pregnancy%20in%20dogs&creative=223892247985&device=c&devicemodel=&placement=&position=1o1&campaignid=939309547&adgroupid=44403893422&loc_physical_ms=9007368&loc_interest_ms=&gclid=EAIaIQobChMI24GO3LSJ2AIVzEsNCh02Ow67EAMYASAAEgJxN_D_BwE I hope this helps and I wish you and Diamond the best!

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! If this is a sudden behavioral change I would have her examined. She could be painful or not feel well and she is acting out because of that. It is better for her health to be spayed, she is at risk for an infected uterus which is an expensive surgical emergency. Hormones can affect temperament, so it MAY help but it might not be the solution. If her exam and blood work are normal, you can have her spayed then consider training and medications to control her aggression. I hope this helps and I wish you and Bella the very best!

Hi, thanks for using Petcoach! It sounds like Roxy is experiencing a pseudopregnancy or a false pregnancy. It is not wrong to have her seen by your Vet to rule out any other medical conditions and to rule out an infected uterus (pyometra). I've attached a link for more information. I hope this helps! https://vcahospitals.com/know-your-pet/false-pregnancy-or-pseudopregnancy-in-dogs

Hi, thanks for using PetCoach! Poor Maya! Sometimes when a dog is spayed close to the start or the end of a heat cycle they can experience pregnancy signs (false pregnancy). This occurs due to a hormonal imbalance or sudden withdrawal of hormones. The body then thinks that it is pregnant when it is not. The dog will carry stuffed animals around like puppies, nest, act clingy or anxious, they can even have mammary gland development and produce milk! It is temporary but can last 2 months but can be shorter. I hope Maya feels better soon! https://www.merckvetmanual.com/reproductive-system/reproductive-diseases-of-the-female-small-animal/false-pregnancy-in-small-animals