I'm gonna be honest with you. I'm a certified pet nutrition consultant. I have a framed certificate and everything. And I still managed to overfeed my own golden retriever for nearly eight months.
How? I ignored the RER formula. Not because I didn't know it. Because I thought I was "eyeballing it." Because Murphy "looked fine." Because I was busy. Because I was tired. Because I was human. And humans are terrible at estimating dog food portions.
RER stands for Resting Energy Requirement. It's the baseline calories your dog needs to survive — to breathe, to pump blood, to digest food, to maintain body temperature. For a 70-pound dog like Murphy, the RER is about 1,100 calories per day. That's it. That's the baseline. That's what he needs to stay alive. Not to run. Not to play. Not to chase squirrels. Just to exist.
Then you add a multiplier. For a typical neutered adult dog with moderate activity, you multiply by 1.6. That gives you about 1,760 calories per day. For Murphy. For his size. For his activity level. For his life.
I was feeding him 2,200 calories per day. Because I was using a scoop. Because the scoop was "about a cup." Because the bag said "2-3 cups per day for a 70-pound dog." Because I was giving him treats. Because I was giving him table scraps. Because I was "just a little bit"-ing him to death. And I didn't know. Because I didn't calculate. Because I didn't measure. Because I thought I knew what I was doing. And I didn't.
It took Dr. Chen — my vet, my friend, my occasional savior — to point it out. "Megan," she said, looking at Murphy's chart, "he's gained 8 pounds in 8 months. You're feeding him too much." I argued. I defended. I made excuses. "He's active," I said. "He walks every day." "He runs at the park." "He's a golden retriever. They need more food."
Dr. Chen looked at me with the patience of someone who has heard every excuse. "Calculate his RER," she said. "Then tell me you're feeding the right amount."
I did. I went home. I got out my calculator. I looked up the formula. RER = 70 × (body weight in kg)^0.75. Murphy was 76 pounds. That's 34.5 kg. 34.5^0.75 = 14.8. 70 × 14.8 = 1,036 calories. Multiply by 1.6 for moderate activity. 1,658 calories. That's what Murphy needed. That's what I should have been feeding him.
I was feeding him 2,200. I was overfeeding by 542 calories per day. That's 33 percent more than he needed. Every day. For 8 months. That's 130,000 extra calories. That's 37 pounds of potential weight gain. And he only gained 8 pounds because he's a golden retriever and they're genetically blessed with the metabolism of a teenage boy. But 8 pounds is enough. 8 pounds is dangerous. 8 pounds is what made him limp. What made him slow down. What made me think he had arthritis. When really, he was just fat. And I was the one making him fat.
I cut his food to 1,650 calories per day. Measured with a scale. Not a scoop. Not a cup. A scale. Grams. Every meal. Every day. No treats. No table scraps. No "just a little bit." And he lost the 8 pounds in 6 months. Not fast. Not dramatic. But steady. And permanent. Because I measured. Because I calculated. Because I used the RER formula. The same formula I teach my clients. The same formula I learned in school. The same formula I ignored because I thought I was too smart for it. I wasn't. I'm not. And neither are you.
So calculate your dog's RER. Use the formula. Use a calculator. Use our RER calculator tool. Know the number. Then feed the number. Not the bag's recommendation. Not the scoop's estimate. Not your eyeball's guess. The number. Because numbers don't lie. And your dog deserves the truth. And you deserve to know it. Even when it's embarrassing. Even when it's hard. Even when it means you were wrong. Because being wrong is the first step to being right. And being right is what keeps your dog alive.
—Megan (currently on my third cup of coffee because writing this made me tired)
Let me tell you about the most embarrassing moment of my career. I was giving a seminar on canine nutrition at a local community center. I was talking about RER. About the formula. About the importance of measuring. About the dangers of overfeeding. And a woman in the back raised her hand. "You say we should measure," she said. "But how do you measure? Do you use a cup? A scoop? A scale?"
I told her to use a scale. A digital kitchen scale. $15 on Amazon. Weigh the food in grams. Every meal. Every day. And she looked at me. And she smiled. And she said, "Do you use a scale?"
I lied. I said yes. I said I used a scale every day. I said I weighed Murphy's food every morning and every evening. I said I was consistent. I said I was disciplined. I said I was perfect. And I was lying. Because I didn't use a scale. I used a scoop. A "cup." A plastic scoop that came with the food. That I had never calibrated. That I had never tested. That I had never questioned. Because I was busy. Because I was tired. Because I was human. And humans are terrible at estimating. Even nutrition consultants. Even me.
I went home that night. I got out the scale. I weighed the scoop. One "cup" was 1.3 cups. Thirty percent more than I thought. Thirty percent more calories than Murphy needed. Thirty percent more weight gain than I expected. And I had been using that scoop for months. Feeding Murphy 30 percent more than he needed. Every day. For months. And I didn't know. Because I didn't measure. Because I thought I was too smart. Too experienced. Too knowledgeable. To make a mistake. And I was wrong.
I threw away the scoop. I bought a scale. I started weighing Murphy's food. 85 grams per meal. Twice a day. Every day. No exceptions. No excuses. No "just this once." And Murphy lost the weight. Slowly. Steadily. Permanently. Because I measured. Because I was honest. Because I admitted I was wrong. And because I changed.
So if you're reading this, and you're using a scoop, or a cup, or your hand, or "about this much," stop. Buy a scale. Weigh the food. In grams. Every meal. Every day. Because even experts make mistakes. Even consultants are human. Even me. And your dog deserves better than our mistakes. Your dog deserves accuracy. And accuracy comes from a scale. Not a scoop. Not a cup. Not a hand. A scale. $15. On Amazon. Today. Right now. Because your dog is worth it. And you are worth the truth. Even when the truth is embarrassing. Even when the truth is hard. Even when the truth means you were wrong. Because being wrong is the first step to being right. And being right is what keeps your dog alive. And healthy. And happy. And with you. For as long as possible. Because that's what love is. Not food. Not treats. Not "just a little bit." Love is measurement. Love is honesty. Love is doing the hard thing. Even when it's embarrassing. Even when it's hard. Even when it means admitting you were wrong. Because love is worth it. And your dog is worth it. And you are worth it. Starting now. Starting today. Starting with the next meal. Weighed. Measured. Accurate. Perfect. Because your dog deserves perfect. And you can give it to them. With a $15 scale. And a little honesty. And a lot of love. The real kind. The hard kind. The kind that lasts. Forever.
—Megan (currently on my third cup of coffee because writing this made me tired)
