Skin and coat changes to track for weeks
The biotin shot helps, but it takes time to replenish what the raw egg white blocked. Over the next 3-4 weeks, run your hands through your dog's coat daily — feel for new dryness, flakiness, or patches where hair seems thinner. Early deficiency signs are subtle: you might notice more dander on his bed or a slight dullness to his usual shine.
Muscle weakness shows as reluctance to jump on the sofa or slower stair climbing. If he pants excessively after normal walks or seems stiff when rising, note the timing for your vet. These changes develop gradually, so compare photos of his coat weekly to spot differences.
Why cooked eggs are the safe alternative
Heat destroys avidin, the protein in raw whites that causes trouble. Scrambled or boiled eggs give your dog all the benefits — high-quality protein, amino acids, and natural biotin — without risk. Mix a teaspoon of cooked egg into his regular food as a test if you want to add it occasionally.
Watch for digestive reactions even to cooked eggs, though they're rare. Soft stools or gassiness mean his system may prefer smaller portions. The yolk is actually richer in biotin than the white, so including both (cooked) helps balance nutrients.
When to call the vet again
Schedule that follow-up within 2-3 weeks even if he seems fine. Blood tests can detect dropping biotin levels before outward symptoms appear. Red flags like crusty skin sores, sudden hair loss around the eyes, or excessive licking at paws mean call immediately — these suggest the deficiency is progressing.
Keep a log: note any vomiting, diarrhea, or appetite changes, though they're less common with biotin issues. If he gets into raw egg whites again before the follow-up, don't wait — your vet may adjust the treatment plan based on cumulative exposure.
Long-term prevention for a curious dog
Dogs who snatch food once often try again. Store eggs in the back of the top fridge shelf, not the door. When cooking, crack eggs straight into the pan or bowl and immediately rinse shells under running water before tossing — the less lingering smell, the fewer temptations.
Train a solid 'leave it' using boiled egg pieces as practice bait (reward with chicken instead). If he's food-motivated, consider a pet-proof trash can for shells. For households that use lots of raw eggs, a small fridge lock adds an extra layer of safety.
The step-by-step response, from the first minute to the vet visit, is in our Raw Egg Whites (Avidin) Poisoning emergency guide.