Can I give my senior Pomeranian Milk of Magnesia for constipation?

No, I would not recommend giving Foxy milk for constipation. Milk actually causes GI upset in dogs, so it will not help. You can try mixing in a tablespoon of canned pumpkin purée (not pumpkin pie filling) on with her food to see if that helps. If she's still constipated in 24-48 hours, then I would have her seen by a vet as she may need a laxative or enema. The vet can diagnose the cause of the constipation.

Administering enemas are best left to your veterinarian. You can add Miralax to his food. Miralax is a very gentle, easy to give treatment for constipation, available over the counter at any pharmacy. The dose of Miralax is 1 tsp per 50 lbs mixed in with food once a day. You can also add a tablespoon of vegetable or olive oil to his food once daily, or add a couple of teaspoons of canned pumpkin (not pie filling) to his food daily. If he is severely constipated right now, I recommend you get him in to see your vet to be debulked.

Constipation can be a very serious condition, it can be caused by a physical blockage (foreign body like a bone) or a functional peristalsis deficiency of the intestines. In order to treat simple constipation, you should increase the fibers in the food (e.g. canned pumpkin) and can add a little mineral oil to the diet. I strongly advise taking Max to the vet in order to check if there is a serious condition causing the constipation first.

While colace can be used to treat constipation in animals, I prefer to use alternative treatments first that may be less likely to cause diarrhea and also can be good long term solutions. Adding psyllium husk to the diet is a great way to increase fiber intake and support healthy bowel movements. You can start with one teaspoon twice a day and gradually increase. I would increase the moisture intake in her food by feeding a predominantly wet diet. You can also consider a prescription high fiber diet.

Poor Alexia! This constipation could be due to impacted anal sacs, not enough exercise, GI tumors, a foreign body, intestinal worms, not enough fiber in the diet, or a neurological disorder among other causes. I would try taking her for a short walk to see if that helps her poop, and mixing in a tablespoon of canned pumpkin puree (not pumpkin pie filling) in with her food to see if that helps her poop. Because this has been going on for a few days, should these methods not work, I would take her into the vet tomorrow. She may need a laxative or an enema to help her pass feces, and the vet can diagnose what is causing the constipation in order to treat her appropriately.

Giving a teaspoon or so of Metamucil should be fine and may help your dog go. You may also want to try to increase his water consumption because even mild dehydration can cause constipation. If these remedies don't work and your dog hasn't defecated in over 2 days then I would recommend taking him in to the vet.

I am very sorry to hear about your puppy. We do occasionally use psyllium hydrophilic mucilloid (such as metamucil) for mild constipation in pets. In a small pet we would normally start with 1 teaspoon (5ml) daily added to food and may increase to several teaspoons if needed. We also sometimes use canned pumpkin for constipation. I would, however, recommend seeking a veterinary exam for your puppy as severe constipation is not normally seen in a dog this age. Also, if your puppy has lethargy, decreased appetite, vomiting, or pain when having the bowel movement these would be signs to seek veterinary care.