Gaining a hamster’s affection and establishing trust requires a mix of scientific methods and patient interaction. Below are practical tips compiled from multiple sources:

I. Basic Interaction Techniques
1. Scent Familiarization Method
Hamsters have poor eyesight but an acute sense of smell. You can help them remember your scent by feeding them treats (such as sunflower seeds or mealworms) directly from your hand. Start by placing the treat on your palm and letting the hamster approach voluntarily—avoid sudden movements that might scare it.
2. Voice Training
Call your hamster by its name in a soft, gentle tone every day, and pair the voice cue with a small snack reward. Over time, this will create a conditioned response: your hamster will learn to associate its name with positive experiences (like food) and may even perk up or move toward you when called.
3. Petting Tips
Hamsters have preferred areas for being petted—focus on the cheeks, back, and neck. These spots feel safe and comforting to them. Always avoid touching their belly, as this is a sensitive area that can trigger feelings of vulnerability or defensiveness. When petting, use light, slow strokes to keep the hamster calm.
II. Environment and Behavior Management
1. Cage Placement
Position the hamster’s cage in an area where you spend a lot of time (e.g., a living room corner or near your desk). This lets the hamster grow accustomed to your presence, movements, and voice over time. Avoid placing the cage in loud, high-traffic areas (like near a TV or door) or direct sunlight, as these can cause stress.
2. Toys and Out-of-Cage Time
Provide your hamster with enrichment toys, such as a digging box (filled with safe bedding material) and an exercise wheel, to keep it mentally and physically stimulated. Additionally, let it have regular “out-of-cage time” (10–15 minutes daily) in a secure, enclosed space (e.g., a playpen with no small gaps). This prevents boredom and depression, which can hinder trust-building.
3. Respect Their Need for Solitude
Hamsters are solitary animals and need plenty of alone time to feel secure. Avoid disturbing them during their active hours (usually nighttime) or when they’re hiding in their nest. Overly frequent interactions can make them anxious, so balance playtime with quiet periods for resting.
III. Advanced Signs of Trust
1. Trust Levels
You can gauge your hamster’s trust through its behavior, which typically progresses in three stages:
Basic Trust: The hamster does not struggle or try to escape when you pick it up.
Intermediate Trust: It feels comfortable enough to sleep in your palm (a sign of complete relaxation).
Advanced Trust: It actively climbs onto your hand or arm without being prompted (showing eagerness to interact).
2. Handling Unusual Behaviors
If your hamster bites you, avoid reacting with sudden movements (which can make it more scared). Instead, check for potential triggers: Did you force interaction (e.g., grabbing it when it tried to hide)? Is the environment stressful (e.g., loud noises, dirty bedding)? Address these issues first, then resume gentle interaction once the hamster calms down.
IV. Common Mistakes to Avoid
One common mistake is forcing the hamster to be held right after it arrives home. Instead, let the hamster settle in for 48 hours first—avoid touching or disturbing it during this period to reduce stress.
Another error is completely replacing all the cage water at once. A better approach is to keep 1/3 of the old water when refilling; this preserves familiar scents and helps the hamster adapt to the new water.
Feeding too many snacks (e.g., daily treats) is also problematic. To prevent obesity and keep treats effective for training, limit snacks to 1–2 times per week.
With consistent use of these methods, most hamsters will develop a trusting relationship with their owners within 1 to 3 months.