Why is my 1-year-old German Shepherd lethargic after first heat?

That is possible. If she has any vomiting, is unable to stand/walk, stops eating, develops a vaginal discharge or seems painful it could be something else going on and she should be examined by a veterinarian.

It sounds like Kane is lethargic and has a loss of appetite. This can be caused by a number of conditions. I recommend having him seen by a vet immediately, as he may require stabilization and supportive care. I hope this helps and that all is well!

I can certainly understand being concerned about Tulip! Lethargy is a very general sign of illness, and it can be caused by systemic illness, infection, inflammation, or injury. I would keep an eye on her tonight, and if she is still acting this way in the morning I would take her into a vet first thing for a health check.

I'm sorry to hear that Daisy has not been feeling well. The loss of appetite, increased drinking, lethargy, and licking of her vulva following mating (presumably during her heat cycle/ estrus) could be due to a number of causes: a urinary tract infection, pyometra (uterine infection), or pregnancy (although this is less likely to cause some of the signs you've noted). At this point, your best bet is to take Daisy to her vet for an exam, blood work, urinalysis, and possibly abdominal x-rays to try to get to the bottom of this situation so that appropriate treatment can be started. If she has a urinary tract infection, she will need antibiotics, whereas if she has a pyometra, she will need to be spayed immediately because this condition is life-threatening if not addressed urgently. I hope this helps and that all goes well for Daisy!

From the sign you are describing it is quite difficult to determine the underlying problem. General signs of lethargy could be commonly due to high temperature which may be related to an infection. In puppies gastrointestinal and urinary tract infections are by far the most common type of infections. If the signs do not resolve in the next 24hours or if Luna is showing any inappetence, more evident lethargy or any other signs (vomiting and diarrhoea for example) I would strongly advice a veterinary check up.

Lethargy and diarrhea re not usually normal during a heat cycle. Most dogs will be actively looking to mate, alert, receptive and have swelling of the vulva along with some bleeding. If you are seeing discharge that is not bleeding, diarrhea and lethargy it is best to bring her into a vet as soon as possible.

Ouch! That's quite the reaction. If Lisa still isn't acting herself fully, it is best to schedule a recheck with the vet. There may still be some sort of reaction going on from whatever she got into, or it may be that there is some GI upset from eating the meal still causing symptoms. A complete check including possible x-rays and blood work can help you figure out the cause as well as treatment to help get her feeling better.