Here, I've used Hero Forge to create a large, muscular, anthropomorphic elephant (Duncan) who's ready to take on and train an overweight young anthropomorphic wolf (Mauno). The elephant shows off his bulging biceps to the wolf.

Story - Part 1
The young wolf Mauno had a problem: he was quite obese for his kind. He had often been mocked, and these taunts tempted him to eat even though he wasn't hungry.
A visit to the doctor made it very clear what Mauno had long known: he needed to lose weight.
But Mauno lacked the right motivation. Sure, his mother had started cooking a little less, but that was very difficult for him.
Mauno thought he would just remain an obese wolf forever.
But then he noticed that he was walking near a sports hall. Normally, he never paid attention, but it was as if an inner voice was telling him to go inside.
Mauno entered the hall and saw something fantastic: It was a huge elephant, but not the "chubby" kind. This elephant really seemed to consist of pure muscle mass.
Mauno was deeply fascinated by this pachyderm.
The elephant, who was lifting a barbell that Mauno couldn't even begin to lift, noticed Mauno.
Mauno felt like he'd been caught stealing a cupcake, so he wanted to leave.
But the elephant insisted that the obese wolf keep him company.
Mauno approached the elephant and introduced himself, apologizing for intruding.
The elephant introduced himself as Duncan and assured him that it was a pleasure to meet him.
The elephant asked him how he could help.
Mauno wasn't usually so trusting, but this muscle-bound elephant seemed like someone easy to trust.
And so Mauno recounted how unhappy he was, unhappy to be the butt of ridicule, both before and after his enormous weight gain.
It wasn't just the heaviness of his body that bothered him, but also the feeling of being so weak and helpless. Despite his size and muscle mass, Duncan showed great compassion and asked Mauno if he felt any better now that he could let out what was making him so sad.
Tears of relief welled up in Mauna's eyes, and the elephant lovingly touched his head with his trunk.
Duncan offered to train Mauno, helping him lose fat and build muscle.
Mauno happily asked Duncan if he was serious.
Duncan said his offer to train him was deadly serious. Duncan said he saw an inner mountain of muscle in Mauno, just waiting to come out.
But Duncan fairly pointed out that it would take a lot of work to lose weight and build muscle.
Mauno firmly declared that he was ready to train, that he wanted to change, especially physically, and perhaps even more so in his personality.
Duncan praised Mauno and said he should come to his house tomorrow.
From that day on, Mauno became the protégé of the elephant Duncan.