meet my puppy! 🐶

Oh my goodness, Leo sounds absolutely adorable, even with his biting! I totally get what you're going through. When I brought my little chihuahua mix, Luna, home at 10 weeks, she was also quite the little shark! It's so common for 12-week-old chihuahua puppies to be super energetic and mouthy – it's their way of exploring the world and teething. It can be really painful, though, especially with those tiny, sharp puppy teeth! One thing that really helped me with Luna's biting was consistent redirection. Whenever she'd nip at my fingers or clothes, I'd immediately say 'No!' in a firm but calm voice and offer her a designated chew toy. It took a lot of patience, but eventually, she started associating my hands with 'no biting' and her toys with 'chew time.' Having a variety of textures in toys – like a softer plushie (just like Leo's duck!) and harder, teething-specific toys – can make a huge difference. Sometimes, freezing a wet washcloth or a puppy-safe chew can also soothe their gums during teething. Another game-changer for high-energy puppies like Leo is establishing a really solid routine. Even though he's sleeping through the night and going outside, structuring his day can work wonders for his calmness. Think about specific times for feeding, potty breaks, play sessions, and naps. 12-week-old puppies need a lot of sleep, sometimes 18-20 hours a day! If Leo isn't getting enough structured nap time, he might become over-tired and even more bitey or 'insane,' as you described. A quiet crate or a comfy bed in a low-traffic area can be his designated nap zone. Socialization is also key at this age, even if he was pre-trained. New environments, new people (gentle introductions!), and even other vaccinated, calm dogs can help him learn appropriate social behaviors and burn off some of that energy in a positive way. Just make sure it's always positive and not overwhelming for a little guy like a chihuahua mix. For little dogs, sometimes a puppy class is perfect because it's controlled and they can interact with other small puppies. For the bursting energy, short, frequent play sessions are better than one long, intense one. Mental stimulation is just as important as physical exercise for a smart breed like a Chihuahua-Dachshund. Puzzle toys, scent games (hiding treats), or even just 5-10 minute training sessions teaching basic commands like 'sit' or 'stay' can tire them out mentally and reinforce good behavior. And don't forget the power of positive reinforcement! When Leo does something good – like chewing his toy instead of you, or settling down for a nap – lavish him with praise and tiny, high-value treats. Puppy training is all about showing them what you want them to do, rather than just correcting what you don't. It builds such a strong bond and makes learning fun for both of you. It sounds like you've already got a great start with his potty training and sleeping habits, which are huge wins for a 12-week-old. Keep up the amazing work, and soon Leo will be a calm, cuddly companion (who still loves his duckie, of course!).