No, seriously

Look at this.

No, seriously. Testicle implants for dogs who've been neutered.

And in case you were wondering (from the FAQ):

Do Neuticles come in different models?

Neuticles are available in three models: NeuticleOriginals (rigid firmness) NeuticleNatural (natural firmness) and Neuticles UltraPLUS. Each are crafted from FDA medically-approved (for human use) materials- replicating the animals testicle in size, shape, weight and feel.

I want my dog's new balls to feel naturally firm, Doctor.